{"product_id":"starter-motor-for-vw-transporter-t5-multivan-1-9-tdi-diesel-2003-2009-stm946","title":"Starter Motor For VW Transporter T5 Multivan 1.9 Tdi Diesel 2003-2009 STM946","description":"\u003cp\u003e#loc21\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eStarter motor for Volkswagen Transporter T5 \/ Multivan T5 1.9 TDI diesel, aftermarket reference STM946.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDesigned to provide the high-torque cranking power required to turn the diesel engine during starting. Suitable for selected T5 1.9 TDI applications, subject to matching the original starter motor specification.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePart Number: STM946\u003c\/p\u003e\u003cp\u003ePart Type: Starter Motor \/ Engine Starting Motor\u003c\/p\u003e\u003cp\u003eVoltage: 12V\u003c\/p\u003e\u003cp\u003eRated Output: 2.0 kW\u003c\/p\u003e\u003cp\u003eFuel Type: Diesel\u003c\/p\u003e\u003cp\u003eEngine Size: 1.9 TDI – 1896cc\u003c\/p\u003e\u003cp\u003eApplication: Selected VW Transporter T5 \/ Multivan T5\u003c\/p\u003e\u003cp\u003eYears: Approximately 2003–2009\u003c\/p\u003e\u003cp\u003eCondition: Replacement starter motor – please refer to listing photographs\/condition details\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCompatibility\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSuitable for selected:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Volkswagen Transporter T5 – 2003–2009\u003c\/p\u003e\u003cp\u003e* Volkswagen Multivan T5 – 2003–2009\u003c\/p\u003e\u003cp\u003e* Volkswagen Caravelle T5 – selected 1.9 TDI applications\u003c\/p\u003e\u003cp\u003e* Transporter Panel Van\u003c\/p\u003e\u003cp\u003e* Kombi\u003c\/p\u003e\u003cp\u003e* Shuttle \/ passenger variants\u003c\/p\u003e\u003cp\u003e* Chassis Cab \/ Platform versions\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSelected 1.9 TDI engines within this vehicle range include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* AXC – 63 kW \/ 85 PS\u003c\/p\u003e\u003cp\u003e* AXB – 77 kW \/ 105 PS\u003c\/p\u003e\u003cp\u003e* BRR – 62 kW \/ 84 PS\u003c\/p\u003e\u003cp\u003e* BRS – 75 kW \/ 102 PS\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDifferent starter motors were fitted depending on engine, gearbox, production date and original electrical specification.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAlways compare the original starter motor before ordering.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTechnical Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe starter motor is a high-current electric motor responsible for cranking the engine during starting.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eWhen the ignition key is turned to the start position:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e1. The starter solenoid receives an electrical signal.\u003c\/p\u003e\u003cp\u003e2. The solenoid engages the starter pinion with the flywheel ring gear.\u003c\/p\u003e\u003cp\u003e3. Battery power is supplied to the starter motor.\u003c\/p\u003e\u003cp\u003e4. The starter rotates the engine.\u003c\/p\u003e\u003cp\u003e5. The engine management system begins fuel injection and combustion.\u003c\/p\u003e\u003cp\u003e6. Once the engine starts, the starter disengages.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDiesel engines require substantial cranking torque due to their higher compression ratios, which is why correct starter output and battery condition are particularly important.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eStarter Motor Specification\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFor STM946, catalogue information identifies:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* 12V electrical system\u003c\/p\u003e\u003cp\u003e* 2.0 kW rated output\u003c\/p\u003e\u003cp\u003e* Bosch 0001123-series starter family reference\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDepending on the exact STM946 catalogue\/manufacturer version, further details such as OE cross-reference and pinion configuration should be checked directly against the starter supplied.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCommon Symptoms of a Faulty Starter Motor\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTypical symptoms include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Engine does not crank\u003c\/p\u003e\u003cp\u003e* Starter clicks but engine does not turn\u003c\/p\u003e\u003cp\u003e* Slow engine cranking\u003c\/p\u003e\u003cp\u003e* Intermittent starting\u003c\/p\u003e\u003cp\u003e* Starter operates only after several attempts\u003c\/p\u003e\u003cp\u003e* Grinding noise during starting\u003c\/p\u003e\u003cp\u003e* Starter motor spinning without engaging the engine\u003c\/p\u003e\u003cp\u003e* Unusual mechanical noise\u003c\/p\u003e\u003cp\u003e* Burning smell from starter area\u003c\/p\u003e\u003cp\u003e* Excessive current draw\u003c\/p\u003e\u003cp\u003e* Starter remaining engaged after the engine starts\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIntermittent starting problems can often become progressively worse as the starter motor, solenoid or internal contacts wear.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eImportant Diagnostic Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA vehicle that does not crank does not automatically have a faulty starter motor.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore replacement, check:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Battery voltage\u003c\/p\u003e\u003cp\u003e* Battery condition\u003c\/p\u003e\u003cp\u003e* Battery terminals\u003c\/p\u003e\u003cp\u003e* Positive starter cable\u003c\/p\u003e\u003cp\u003e* Engine\/gearbox earth strap\u003c\/p\u003e\u003cp\u003e* Starter electrical connections\u003c\/p\u003e\u003cp\u003e* Starter solenoid trigger supply\u003c\/p\u003e\u003cp\u003e* Ignition\/start signal\u003c\/p\u003e\u003cp\u003e* Relevant fuses and relays\u003c\/p\u003e\u003cp\u003e* Immobiliser\/engine management faults where applicable\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA weak battery or poor engine earth can produce symptoms very similar to a failing starter motor.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSlow Cranking\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf the engine turns over slowly, check the battery and electrical connections before replacing the starter.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePossible causes include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Weak battery\u003c\/p\u003e\u003cp\u003e* Poor battery terminals\u003c\/p\u003e\u003cp\u003e* Corroded positive cable\u003c\/p\u003e\u003cp\u003e* Poor engine earth\u003c\/p\u003e\u003cp\u003e* Excessive starter current draw\u003c\/p\u003e\u003cp\u003e* Internal starter wear\u003c\/p\u003e\u003cp\u003e* Mechanical engine resistance\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eVoltage-drop testing across the positive and earth circuits can help identify high-resistance connections.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eStarter Solenoid Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe starter solenoid performs two important functions:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Engages the starter pinion with the flywheel\u003c\/p\u003e\u003cp\u003e* Switches the high-current electrical supply to the starter motor\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA worn solenoid may produce a noticeable click without the starter motor successfully cranking the engine.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIntermittent operation can also result from worn internal electrical contacts.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFlywheel \/ Ring Gear Inspection\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf the original starter has been making grinding or engagement noises, inspect the flywheel ring gear where possible.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDamaged teeth can cause:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Grinding during starting\u003c\/p\u003e\u003cp\u003e* Intermittent failure to engage\u003c\/p\u003e\u003cp\u003e* Starter pinion damage\u003c\/p\u003e\u003cp\u003e* Abnormal starting noise\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eInstalling another starter motor will not correct a damaged flywheel ring gear.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBattery \u0026amp; Charging System\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe starter motor depends on a healthy battery and charging system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore condemning the starter, check:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Battery state of charge\u003c\/p\u003e\u003cp\u003e* Battery condition\u003c\/p\u003e\u003cp\u003e* Alternator charging voltage\u003c\/p\u003e\u003cp\u003e* Battery cable condition\u003c\/p\u003e\u003cp\u003e* Engine\/gearbox earth connections\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eRepeated attempts to start the vehicle with a severely discharged battery can also place additional stress on the starter motor.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eInstallation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Disconnect the battery\u003c\/p\u003e\u003cp\u003e* Compare the replacement starter with the original\u003c\/p\u003e\u003cp\u003e* Compare mounting points\u003c\/p\u003e\u003cp\u003e* Compare pinion\/gear configuration\u003c\/p\u003e\u003cp\u003e* Compare electrical terminals\u003c\/p\u003e\u003cp\u003e* Check OE\/reference numbers\u003c\/p\u003e\u003cp\u003e* Inspect battery cables\u003c\/p\u003e\u003cp\u003e* Inspect engine\/gearbox earth connections\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDuring installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Ensure mounting surfaces are clean\u003c\/p\u003e\u003cp\u003e* Secure the starter correctly\u003c\/p\u003e\u003cp\u003e* Tighten electrical terminals appropriately\u003c\/p\u003e\u003cp\u003e* Route cables in their original positions\u003c\/p\u003e\u003cp\u003e* Ensure cables cannot contact hot or moving components\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAfter installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Reconnect the battery correctly\u003c\/p\u003e\u003cp\u003e* Check starter operation\u003c\/p\u003e\u003cp\u003e* Listen for abnormal engagement noises\u003c\/p\u003e\u003cp\u003e* Confirm normal engine cranking speed\u003c\/p\u003e\u003cp\u003e* Check charging-system operation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eProgramming \/ Coding\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eNo programming or coding is normally required for the starter motor itself.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIt is an electrical\/mechanical starting component.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOnce the correct starter has been installed and connected correctly, it should operate without electronic coding.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eImportant Compatibility Note\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eVolkswagen used more than one starter-motor specification within the Transporter T5 1.9 TDI range.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore ordering, compare:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* STM946 reference\u003c\/p\u003e\u003cp\u003e* Original VW OE number\u003c\/p\u003e\u003cp\u003e* Bosch\/manufacturer number\u003c\/p\u003e\u003cp\u003e* 12V specification\u003c\/p\u003e\u003cp\u003e* Rated power\/output\u003c\/p\u003e\u003cp\u003e* Pinion tooth count\u003c\/p\u003e\u003cp\u003e* Pinion dimensions\u003c\/p\u003e\u003cp\u003e* Mounting points\u003c\/p\u003e\u003cp\u003e* Electrical terminal arrangement\u003c\/p\u003e\u003cp\u003e* Engine code\u003c\/p\u003e\u003cp\u003e* Gearbox type\u003c\/p\u003e\u003cp\u003e* Vehicle production date\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDo not purchase solely because the vehicle is a:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eVW Transporter T5 1.9 TDI 2003–2009.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMatching the original starter’s OE\/manufacturer number and physical configuration is strongly recommended.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCondition\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eReplacement starter motor.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePlease inspect all listing photographs carefully for the exact condition and specification of the item supplied.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCheck particularly:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Starter casing\u003c\/p\u003e\u003cp\u003e* Mounting points\u003c\/p\u003e\u003cp\u003e* Pinion gear\u003c\/p\u003e\u003cp\u003e* Electrical terminals\u003c\/p\u003e\u003cp\u003e* Solenoid\u003c\/p\u003e\u003cp\u003e* Manufacturer\/part-number label\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOnly the starter motor and accessories clearly shown in the listing photographs are included.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAny identifying colour\/security markings applied to the part must remain intact in the event of a return.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIdeal replacement for a worn, slow, intermittent or failed VW Transporter T5 \/ Multivan 1.9 TDI starter motor, provided STM946 and the original starter specification match.\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003ePower Rating:\u003c\/strong\u003e 2.0 KW\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOther Part Number:\u003c\/strong\u003e 438175,458217 ,QS3228 =STM946\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Holes:\u003c\/strong\u003e 2\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSeller Warranty:\u003c\/strong\u003e 1 Year\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e QS3228N\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuperseded Part Number:\u003c\/strong\u003e 02Z911023FX, 02Z911023F\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference OE\/OEM Number:\u003c\/strong\u003e 02Z911023F ,02Z911023H\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e KM4UK\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Teeth:\u003c\/strong\u003e 10\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Starter Motor\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInterchange Part Number:\u003c\/strong\u003e 0001123012 ,0001123013\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 1 Year\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 V\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eClassic Part:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e Clockwise Rotation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Fitment:\u003c\/strong\u003e No\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Part:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003c\/div\u003e","brand":"KM4UK","offers":[{"title":"Default Title","offer_id":54931034931527,"sku":"158270839045","price":35.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/1528\/3527\/files\/10_afdcd18f-a42b-43c5-81bc-e9cb06784efa.jpg?v=1788872756","url":"https:\/\/spares4repairs.store\/products\/starter-motor-for-vw-transporter-t5-multivan-1-9-tdi-diesel-2003-2009-stm946","provider":"Spares 4 Repairs","version":"1.0","type":"link"}