{"product_id":"konnwei-kw890-obd2-diagnostik-scanner-batteritest","title":"KONNWEI KW890 – 3-in-1 OBD2\/EOBD Scanner, 12V Battery Tester \u0026 Oil Service Reset","description":"\u003cdiv class=\"product-copy\" lang=\"en\"\u003e\n\u003c!-- Short version (200–300 words) --\u003e\n\u003csection id=\"sammanfattning-kort\"\u003e\n\u003ch2\u003eQuick Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW890 – 3-in-1 OBD2 Scanner + Battery Tester + Oil Service Reset\u003c\/strong\u003e is a powerful yet affordable tool for comprehensive basic engine\/emissions diagnostics (OBD-II\/EOBD), professional 12V starter battery testing, and quick oil service reset where supported by the vehicle. The KW890 builds on the popular KW850\/KW870 with \u003cem\u003eOne-Click I\/M-Readiness\u003c\/em\u003e, a 2.8\" color screen (320×240), a speaker, and a large fault code database with \"troubleshooter\" tips that save both troubleshooting time and money.\u003c\/p\u003e\n\u003cp\u003eAs a \u003cstrong\u003ebattery analyzer\u003c\/strong\u003e, it measures \u003cem\u003eCCA, SOC, SOH, and internal resistance\u003c\/em\u003e, and performs \u003cem\u003ecranking\u003c\/em\u003e and \u003cem\u003echarging tests\u003c\/em\u003e (charging system). It supports common 12V starter battery chemistries (Flooded\/SMF, AGM flat\/spiral, GEL) and – according to manufacturer specifications – also some lithium starter batteries (depending on BMS). Results are clearly displayed with graphs and can be saved for printing via PC (\u003cem\u003efree lifetime updates\u003c\/em\u003e via USB).\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eOil Service Reset\u003c\/strong\u003e resets the service indicator after maintenance on supported vehicles (functionality depends on make\/model and year). The OBD part covers all 10 OBD-II modes: read\/clear codes (MIL), live data\/graphing, freeze-frame, readiness\/IM status, VIN\/CIN\/CVN, etc. The KW890 speaks multiple languages (EN\/FR\/ES\/DE\/RU\/IT\/PL) and works on OBD-II compliant cars from the USA (1996→) and EU\/Asia according to their respective OBD implementation dates.\u003c\/p\u003e\n\u003cp\u003eWant to complete your toolkit? See our internal categories for \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/obd2-felkodslasare\" rel=\"noopener\"\u003eOBD2 Fault Code Readers\u003c\/a\u003e, \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/batteritestare\" rel=\"noopener\"\u003eBattery Testers\u003c\/a\u003e, and \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/obd2-kablar-adaptrar\" rel=\"noopener\"\u003eOBD Cables \u0026amp; Adapters\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- H1 with main keywords --\u003e\n\u003ch1 id=\"top\"\u003eKONNWEI KW890 – 3-in-1 OBD2 Scanner, 12V Battery Tester \u0026amp; Oil Service Reset (2.8″ TFT)\u003c\/h1\u003e\n\u003c!-- Table of Contents \/ anchor links --\u003e\u003cnav aria-label=\"Content\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#introduktion\"\u003eIntroduction\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specifikationer\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#funktioner\"\u003eFeatures \u0026amp; Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fordelar\"\u003eBenefits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#kompatibilitet\"\u003eCompatibility\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#manual\"\u003eInstallation \u0026amp; Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#tips\"\u003eTips \u0026amp; Advice\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFrequently Asked Questions (FAQ)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#forpackning\"\u003ePackage Contents\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ansvar\"\u003eDisclaimer \u0026amp; Important Notes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#sammanfattning-lang\"\u003eSummary\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/nav\u003e\u003c!-- Introduction --\u003e\n\u003csection id=\"introduktion\"\u003e\n\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW890\u003c\/strong\u003e is a \u003cem\u003eprofessional OBD-II\/EOBD scanner\u003c\/em\u003e that combines three tools in one: \u003cstrong\u003eengine\/emissions diagnostics\u003c\/strong\u003e, \u003cstrong\u003ebattery testing\u003c\/strong\u003e, and \u003cstrong\u003eoil service reset\u003c\/strong\u003e. The OBD part supports all 10 standard modes (Mode $01–$0A) and allows you to read\/clear fault codes (MIL\/Check Engine), review live data in real-time with graph display, view freeze-frame, check readiness\/IM status, and retrieve VIN\/CIN\/CVN. The patented \u003cem\u003eOne-Click I\/M-Readiness\u003c\/em\u003e button shows with one press if the car is ready for emissions\/inspection checks.\u003c\/p\u003e\n\u003cp\u003eAs a \u003cstrong\u003edigital battery analyzer\u003c\/strong\u003e for 12V (and according to spec, also 6V in lead-acid starter battery test modes), the KW890 performs accurate conductivity tests of starter batteries: \u003cem\u003eCCA (Cold Cranking Amps), SOC (State of Charge), SOH (State of Health)\u003c\/em\u003e, and \u003cem\u003einternal resistance\u003c\/em\u003e. It also performs \u003cstrong\u003ecranking tests\u003c\/strong\u003e (starting performance) and \u003cstrong\u003echarging tests\u003c\/strong\u003e (charging system: alternator\/regulator), making it easy to locate faults in the starting and charging circuits. Results are clearly presented on the 2.8″ color screen (320×240) and can be stored for printing via PC.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eOil Service Reset\u003c\/strong\u003e resets the service indicator after an oil change where the vehicle's system allows it. As the availability of this function depends on the make\/model\/year, it is considered a \u003cem\u003especial function\u003c\/em\u003e – refer to the manual and the vehicle's workshop data for exact support. The KW890 has a built-in speaker, LED indicators (visual\/auditory support), supports updates via USB, and has a multi-language interface (EN\/FR\/ES\/DE\/RU\/IT\/PL).\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Specifications --\u003e\n\u003csection id=\"specifikationer\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e KONNWEI KW890 – OBD2\/EOBD scanner + battery tester + oil service reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 2.8″ TFT color (320 × 240 dpi), backlit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound\/Indication:\u003c\/strong\u003e Built-in speaker + color-coded LED indicators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOBD Modes:\u003c\/strong\u003e All 10 modes (Mode $01–$0A), incl. DTC, live data, freeze-frame, IM-readiness, O2 tests, etc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTC Database:\u003c\/strong\u003e Built-in fault code lexicon with troubleshooting tips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHotkey:\u003c\/strong\u003e Patented One-Click I\/M-Readiness key\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocols:\u003c\/strong\u003e ISO 9141, KWP2000 (ISO 14230), SAE J1850 PWM\/VPW, CAN (ISO 15765-4)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Test:\u003c\/strong\u003e SOC, SOH, CCA, internal resistance, \u003cem\u003ecranking\u003c\/em\u003e and \u003cem\u003echarging\u003c\/em\u003e test, voltage waveform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Types:\u003c\/strong\u003e 12V starter batteries (Flooded\/SMF, AGM flat\/spiral, GEL) and, according to spec, selected lithium starter batteries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLanguages:\u003c\/strong\u003e English, French, Spanish, German, Russian, Italian, Polish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePC Support:\u003c\/strong\u003e Windows XP\/7\/8\/10 (upgrade\/print data via USB), free lifetime updates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory Function:\u003c\/strong\u003e Stores DTC, live data, freeze-frame; playback and offline analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\/Finish:\u003c\/strong\u003e Red rubber casing (grip protection)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- Features \u0026 applications --\u003e\n\u003csection id=\"funktioner\"\u003e\n\u003ch2\u003eFeatures \u0026amp; Applications\u003c\/h2\u003e\n\u003ch3\u003eOBD Diagnostics (Engine\/Emissions)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReads and clears both generic (P0\/P2\/P3\/U0) and manufacturer-specific (P1\/P3\/U1) fault codes (DTC).\u003c\/li\u003e\n\u003cli\u003eTurns off MIL\/Check Engine after correcting the cause and resets monitors.\u003c\/li\u003e\n\u003cli\u003eDisplays DTC definitions on screen + troubleshooting tips for faster diagnosis.\u003c\/li\u003e\n\u003cli\u003eLive data with graphing (sensor current, fuel trim, O2 test, MAF\/MAP, ECT, RPM, speed, etc.).\u003c\/li\u003e\n\u003cli\u003eFreeze-frame and I\/M-readiness for inspection preparations.\u003c\/li\u003e\n\u003cli\u003eReads VIN\/CIN\/CVN (Mode $09) for vehicle identification and calibration information.\u003c\/li\u003e\n\u003cli\u003eSupport for all current OBD-II\/EOBD protocols (incl. CAN-bus).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e12V Battery Testing (and 6V according to spec)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eQuick test of \u003cstrong\u003eCCA\u003c\/strong\u003e, \u003cstrong\u003eSOC\u003c\/strong\u003e, \u003cstrong\u003eSOH\u003c\/strong\u003e, and \u003cstrong\u003einternal resistance\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCranking test\u003c\/em\u003e: assesses starting performance and voltage drop during cranking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eCharging test\u003c\/em\u003e: checks alternator\/regulator and charging voltage stability.\u003c\/li\u003e\n\u003cli\u003eVoltage waveform (graph) for in-depth troubleshooting.\u003c\/li\u003e\n\u003cli\u003eSupport for Flooded\/SMF, AGM (flat\/spiral), GEL, and – according to manufacturer information – some lithium starter batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOil Service Reset\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResets service light\/interval after an oil change on vehicles that support the function via OBD.\u003c\/li\u003e\n\u003cli\u003eAdapts service cycle according to the vehicle's logic (mileage\/time\/climate, etc.).\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Support varies – see the \u003ca href=\"#faq\"\u003eFAQ\u003c\/a\u003e section and the vehicle's workshop data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOperation \u0026amp; Environment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge, easy-to-read color screen with multi-language menu.\u003c\/li\u003e\n\u003cli\u003eFast keyboard with dedicated I\/M button.\u003c\/li\u003e\n\u003cli\u003eBuilt-in speaker and LED feedback (visual\/auditory).\u003c\/li\u003e\n\u003cli\u003eData can be saved, played back, printed via PC (USB).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- Benefits --\u003e\n\u003csection id=\"fordelar\"\u003e\n\u003ch2\u003eBenefits – why the KW890 is a good choice\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-in-one:\u003c\/strong\u003e OBD2 scanner, battery tester, and oil service reset in one unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime-saving:\u003c\/strong\u003e One-Click I\/M-Readiness, DTC tips, and graphical live data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional battery diagnosis:\u003c\/strong\u003e CCA\/SOC\/SOH\/IR + cranking\/charging test with waveform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgradeable:\u003c\/strong\u003e Free lifetime updates, data printing via PC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-language:\u003c\/strong\u003e Choose interface in EN\/FR\/ES\/DE\/RU\/IT\/PL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust:\u003c\/strong\u003e Rubber protection and clear interface for demanding workshop use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMore tools? Explore our internal selections of \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/obd2-felkodslasare\" rel=\"noopener\"\u003eOBD2 Fault Code Readers\u003c\/a\u003e and \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/batteritestare\" rel=\"noopener\"\u003eBattery Testers\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Compatibility --\u003e\n\u003csection id=\"kompatibilitet\"\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOBD Diagnostics:\u003c\/strong\u003e Works on OBD-II\/EOBD compliant vehicles (USA: 1996→, EU petrol ≈ 2001→, EU diesel ≈ 2004→; some exceptions apply). Supports ISO 9141, KWP2000 (ISO 14230), SAE J1850 PWM\/VPW, and ISO 15765-4 (CAN).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBattery Test:\u003c\/strong\u003e Designed for 12V starter batteries (and according to spec, 6V in relevant modes) of types Flooded\/SMF, AGM (flat\/spiral), and GEL. According to manufacturer information, some lithium starter batteries can be tested – \u003cem\u003efunction and accuracy depend on BMS\/technology\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOil Service Reset:\u003c\/strong\u003e Availability depends on make\/model\/year and the vehicle's control unit. Refer to the vehicle's workshop information and the list in the tool's menus.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Installation \u0026 manual --\u003e\n\u003csection id=\"manual\"\u003e\n\u003ch2\u003eInstallation \u0026amp; Manual 🔧\u003c\/h2\u003e\n\u003ch3\u003ePreparations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePark safely, apply parking brake.\u003c\/li\u003e\n\u003cli\u003eHave the vehicle's key\/ignition system ready (ignition \u003cem\u003eON\u003c\/em\u003e without starting for many OBD functions).\u003c\/li\u003e\n\u003cli\u003eEnsure the OBD port (usually under the dashboard near the driver) is easily accessible.\u003c\/li\u003e\n\u003cli\u003eFor battery test: Turn off all consumers, doors, and lights. Let the car rest for a few minutes.\u003c\/li\u003e\n\u003cli\u003eFor oil service reset: First perform service\/oil change according to manufacturer's specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-step: OBD Diagnostics\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConnect the KW890's OBD cable to the car's OBD-II socket.\u003c\/li\u003e\n\u003cli\u003eTurn on ignition (engine \u003cem\u003eoff\u003c\/em\u003e initially) and start the KW890.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eOBD-II\/EOBD\u003c\/strong\u003e in the menu. The tool automatically identifies protocol and ECU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead Fault Codes (DTC):\u003c\/strong\u003e Go to \u003cem\u003eRead Codes\u003c\/em\u003e for active\/stored\/pending codes with definitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze-frame:\u003c\/strong\u003e View frozen parameters from when the code was set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive data:\u003c\/strong\u003e Select \u003cem\u003eData Stream\u003c\/em\u003e, mark sensors (ECT, MAF, MAP, O2, STFT\/LTFT, RPM, VSS, etc.) and open graph.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/M-Readiness:\u003c\/strong\u003e Press \u003cem\u003eOne-Click I\/M\u003c\/em\u003e for quick inspection status (monitor circuits ready\/not ready).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear Fault Codes:\u003c\/strong\u003e After correcting the cause, select \u003cem\u003eClear Codes\u003c\/em\u003e to extinguish MIL. Then perform a drive cycle so monitors can become \"Ready\".\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVIN\/CIN\/CVN:\u003c\/strong\u003e Read identities under Mode $09 as needed (e.g., for calibration check).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSave \u0026amp; Print:\u003c\/strong\u003e Store reports and export via PC software (USB) for printing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eStep-by-step: Battery Test (12V, according to spec also 6V)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off engine and all extra consumption. Open battery cover if necessary.\u003c\/li\u003e\n\u003cli\u003eConnect test leads: \u003cstrong\u003eRED\u003c\/strong\u003e to battery \u003cstrong\u003e+\u003c\/strong\u003e, \u003cstrong\u003eBLACK\u003c\/strong\u003e to \u003cstrong\u003e−\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSelect battery type (Flooded\/SMF, AGM, GEL, possibly lithium depending on your model) and \u003cem\u003eCCA\/EN\/DIN\/IEC\u003c\/em\u003e standard and nominal CCA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Health (SOC\/SOH):\u003c\/strong\u003e Run rest test. Read SOC, SOH, internal resistance, and voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking test:\u003c\/strong\u003e Start the engine when prompted. The tool measures the lowest voltage during cranking and assesses the starting circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging test:\u003c\/strong\u003e Let the engine run without and with consumers (lights\/fan). The tool assesses alternator\/regulator (charging voltage\/ripple).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaveform:\u003c\/strong\u003e Display voltage graph to detect ripple, regulator oscillations, or faulty diode bridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSave report:\u003c\/strong\u003e Store results, print via PC if you wish to attach to customer record.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eStep-by-step: Oil Service Reset\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePerform oil change and service according to OEM. Then turn on ignition (engine off).\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eOil Reset\u003c\/strong\u003e in the main menu.\u003c\/li\u003e\n\u003cli\u003eSelect vehicle\/menu according to on-screen instructions (model\/year\/ECU).\u003c\/li\u003e\n\u003cli\u003eFollow the instructions: the tool resets the service indicator\/mileage\/time where support is available.\u003c\/li\u003e\n\u003cli\u003eTurn off ignition, wait 10 seconds, turn on again and verify that the service light is off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e If the vehicle requires manual menu selections in the instrument cluster, the KW890 provides guidance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePC connection, printing \u0026amp; updating\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall PC software (Windows XP\/7\/8\/10). Connect KW890 via USB cable.\u003c\/li\u003e\n\u003cli\u003eExport saved reports (DTC\/live data\/battery test) and print.\u003c\/li\u003e\n\u003cli\u003eCheck for firmware\/database updates and update free of charge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTroubleshooting\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo OBD connection:\u003c\/strong\u003e Check OBD fuse, ignition position, other aftermarket OBD equipment interfering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCannot clear MIL:\u003c\/strong\u003e Address the root cause; some codes will not clear until the problem is gone and monitors have passed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncorrect battery values:\u003c\/strong\u003e Check battery type\/standard\/CCA input and battery temperature\/rest time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil reset fails:\u003c\/strong\u003e Vehicle does not support via OBD or requires OEM procedure. Follow vehicle's manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdate stopped:\u003c\/strong\u003e Try another USB port\/cable and run software as administrator.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- Tips \u0026 advice --\u003e\n\u003csection id=\"tips\"\u003e\n\u003ch2\u003eTips \u0026amp; Advice 💡\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlways save codes\u003c\/strong\u003e and freeze-frame before clearing – valuable for post-analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspection prep:\u003c\/strong\u003e Use One-Click I\/M to ensure monitors are \"Ready\". Perform a proper drive cycle after clearing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery test:\u003c\/strong\u003e Let the battery rest for a few minutes before the rest test. For AGM\/GEL, select the correct type for accurate results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking:\u003c\/strong\u003e Low starting voltage may indicate a bad battery, poor ground, sluggish starter motor, or thick oil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging:\u003c\/strong\u003e Abnormal ripple often indicates a diode fault. Also measure directly at the alternator if suspected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil reset:\u003c\/strong\u003e Note the next service interval in the tool's report and in the car's service book.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e Print reports for the customer or save in your vehicle file.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FAQ --\u003e\n\u003csection id=\"faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3\u003eDoes the KW890 work on my car?\u003c\/h3\u003e\n\u003cp\u003eIf the car is OBD-II\/EOBD compliant, the answer is usually yes (USA 1996→, EU petrol ≈ 2001→, EU diesel ≈ 2004→).\u003c\/p\u003e\n\u003ch3\u003eCan it read ABS\/airbag\/comfort modules?\u003c\/h3\u003e\n\u003cp\u003eThe KW890 is primarily for engine\/emissions (OBD-II). For brand-specific systems, brand-specific tools are often required.\u003c\/p\u003e\n\u003ch3\u003eWhat is One-Click I\/M-Readiness?\u003c\/h3\u003e\n\u003cp\u003eA quick button that shows if the emissions monitors are ready (before inspection).\u003c\/p\u003e\n\u003ch3\u003eDoes it support all OBD protocols?\u003c\/h3\u003e\n\u003cp\u003eYes: ISO 9141, KWP2000, SAE J1850 PWM\/VPW, and CAN (ISO 15765-4).\u003c\/p\u003e\n\u003ch3\u003eCan I reset the service light (oil reset) on all cars?\u003c\/h3\u003e\n\u003cp\u003eNo, the function depends on make\/model\/year. The KW890 guides where support exists; otherwise, follow the OEM procedure in the instrument cluster.\u003c\/p\u003e\n\u003ch3\u003eDoes it test 6V batteries?\u003c\/h3\u003e\n\u003cp\u003eAccording to manufacturer spec, modes for 6V lead-acid starter batteries exist; the primary focus is 12V starter batteries.\u003c\/p\u003e\n\u003ch3\u003eSupport for lithium starter batteries?\u003c\/h3\u003e\n\u003cp\u003eAccording to specification – but results and safety depend on BMS\/technology. Follow the battery manufacturer's instructions.\u003c\/p\u003e\n\u003ch3\u003eWhat are CCA, SOC, and SOH?\u003c\/h3\u003e\n\u003cp\u003eCCA: cold cranking amps, SOC: state of charge, SOH: state of health. Together they provide a good picture of the battery's status.\u003c\/p\u003e\n\u003ch3\u003eCan I print reports?\u003c\/h3\u003e\n\u003cp\u003eYes, save data in the unit and print via PC software (USB).\u003c\/p\u003e\n\u003ch3\u003eWhat languages are available in the menu?\u003c\/h3\u003e\n\u003cp\u003eEnglish, French, Spanish, German, Russian, Italian, Polish.\u003c\/p\u003e\n\u003ch3\u003eDo I get sound\/LED indication?\u003c\/h3\u003e\n\u003cp\u003eYes, the unit has a speaker and color-coded LED indicators for visual\/auditory feedback.\u003c\/p\u003e\n\u003ch3\u003eCan I update the tool?\u003c\/h3\u003e\n\u003cp\u003eYes, free lifetime updates via PC and USB cable.\u003c\/p\u003e\n\u003ch3\u003eWhat do VIN\/CIN\/CVN mean?\u003c\/h3\u003e\n\u003cp\u003eVIN: vehicle identification number, CIN: calibration ID, CVN: calibration verification number (Mode $09).\u003c\/p\u003e\n\u003ch3\u003eWhy does the fault code come back after clearing?\u003c\/h3\u003e\n\u003cp\u003eThe root cause remains. Read live data, fix the fault, and check again.\u003c\/p\u003e\n\u003ch3\u003eCan I damage the car with the KW890?\u003c\/h3\u003e\n\u003cp\u003eReading is passive. Incorrect clearing can reset monitors – document before clearing and follow the manual.\u003c\/p\u003e\n\u003ch3\u003eDoes it show fuel trim and O2 sensors?\u003c\/h3\u003e\n\u003cp\u003eYes, as part of live data and O2 test (Mode $05\/$06 depending on ECU).\u003c\/p\u003e\n\u003ch3\u003eDoes it work on electric cars\/hybrids?\u003c\/h3\u003e\n\u003cp\u003eOBD engine\/emissions data may be limited on EV\/Hybrid. The battery tester is for the 12V starter battery.\u003c\/p\u003e\n\u003ch3\u003eHow do I select the correct CCA for testing?\u003c\/h3\u003e\n\u003cp\u003eRead the marking on the battery (CCA\/EN\/DIN\/IEC). Enter the number and standard in the KW890 before testing.\u003c\/p\u003e\n\u003ch3\u003eIs the software compatible with Windows 11?\u003c\/h3\u003e\n\u003cp\u003eOfficially XP\/7\/8\/10. Windows 11 may work but is not always guaranteed – try compatibility mode\/drivers.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Package Contents --\u003e\n\u003csection id=\"forpackning\"\u003e\n\u003ch2\u003ePackage Contents 📦\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × KONNWEI KW890 handheld unit (2.8″ TFT)\u003c\/li\u003e\n\u003cli\u003e1 × OBD-II data cable\u003c\/li\u003e\n\u003cli\u003e1 × USB cable (PC connection\/update)\u003c\/li\u003e\n\u003cli\u003e1 × Quick manual\/user guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote!\u003c\/em\u003e Contents may vary per batch\/market. Refer to the label\/manual that comes with your unit.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Disclaimer --\u003e\n\u003csection id=\"ansvar\"\u003e\n\u003ch2\u003eDisclaimer \u0026amp; Important Notes ⚠️\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSpecifications\/functions may change without prior notice.\u003c\/li\u003e\n\u003cli\u003eOBD-II primarily covers engine\/emissions. Brand-specific systems often require OEM tools.\u003c\/li\u003e\n\u003cli\u003eBattery testing on lithium requires the battery's BMS to allow it. Always follow the battery manufacturer's instructions.\u003c\/li\u003e\n\u003cli\u003eDo not clear fault codes before data is documented and the cause is identified.\u003c\/li\u003e\n\u003cli\u003eUpdate software officially supports Windows XP\/7\/8\/10.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- Long summary\/conclusion --\u003e\n\u003csection id=\"sammanfattning-lang\"\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW890\u003c\/strong\u003e combines three tools in one robust, user-friendly instrument: an \u003cem\u003eOBD2 scanner\u003c\/em\u003e for engine\/emissions, a \u003cem\u003ebattery tester\u003c\/em\u003e for the starting and charging circuits, and an \u003cem\u003eoil service reset\u003c\/em\u003e where supported. The patented I\/M button, clear color screen, DTC tips, and graphical live data make troubleshooting quick and logical. The battery section provides professional-level features with CCA\/SOC\/SOH\/IR, cranking\/charging tests, and waveform analysis. With PC printing and free updates, the KW890 is a smart long-term investment for both workshops and enthusiasts.\u003c\/p\u003e\n\u003cp\u003eExpand your toolkit with matching products in our internal categories: \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/obd2-felkodslasare\" rel=\"noopener\"\u003eOBD2 Fault Code Readers\u003c\/a\u003e, \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/batteritestare\" rel=\"noopener\"\u003eBattery Testers\u003c\/a\u003e, and \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/obd2-kablar-adaptrar\" rel=\"noopener\"\u003eOBD Cables \u0026amp; Adapters\u003c\/a\u003e. If you have any questions – contact us and we'll help you choose the right one.\u003c\/p\u003e\n\u003c\/section\u003e\u003c\/div\u003e\u003cp\u003e\u003ca href=\"#top\" aria-label=\"Back to top\"\u003eBack to top ↑\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: 12 November 2025\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Konnwei","offers":[{"title":"Default Title","offer_id":54177168032012,"sku":"FEL-B0205","price":102.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H802dcbe66f9a418b958766e7bd6c8b23A.jpg?v=1766929149","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/konnwei-kw890-obd2-diagnostik-scanner-batteritest","provider":"Felkodsläsare","version":"1.0","type":"link"}