【Quality Enhancement】 04L 907 282B 04L907282B Glow Plug Controller Relay Module, 12V 9-Pin Diesel Preheat/Afterglow Control Unit, Replaces 038907281B, 527# Glow Plug Relay

04L907282B Diesel Glow Plug Controller RelayReplacement glow plug controller for 12V diesel preheat/afterglow systems. Match the OE number on your original module before ordering.Key SpecsOE reference: 04L907282B (also written as 04L-907-282-B / 04L 907 282 B)Replaces/supersedes: 038907281B (verify on the old part label)Electrical system: 12V vehicle systemConnector: 9-pin plug-in style (match connector keying/pin layout)What It DoesControls glow plug heating strategy during cold start and warm-up (preheat & afterglow)Supports stable warm-up when the original controller/relay is faulty (diagnose first)Common Symptoms (May Vary)Hard cold starting or extended crankingGlow plug warning light or glow plug circuit fault codesIntermittent preheat/afterglow operationFitment and location vary by vehicle. Confirm fitment by OE number and your vehicle manual/VIN. If the OE number, connector, or pin layout does not match your original part, do not install.

• 12V diesel glow plug controller relay / glow plug control module (9-pin) - manages glow plug preheat & afterglow timing/current commands to support reliable cold starts and stable warm-up; OE# 04L907282B (also written as 04L-907-282-B / 04L 907 282 B); replaces/supersedes 038907281B; direct plug-in style when OE number and connector match (no cutting/splicing); keywords: glow plug relay module, glow plug timer, diesel preheat relay, afterglow control unit; helps address symptoms such as hard cold start, no-preheat, or glow plug warning light that are caused by a faulty controller (confirm with proper diagnosis).
• Install tips: turn ignition OFF and remove key; allow the vehicle electronics to fully power down; disconnect the negative battery cable if your service manual allows. Locate the glow plug control unit/relay on your diesel engine (location varies by vehicle - use the vehicle manual/service guide), release the connector lock, unplug the 9-pin connector, swap the module, and re-connect until it clicks. Double-check pin layout, mounting points, and OE# before install; clear any stored codes and test. Note: this part is for diesel glow plug systems only - not for gasoline engines.
• Compatible with 2005 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2006 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2007 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2008 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2009 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2010 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2011 Volkswagen Jetta Diesel Glow Plug Controller Relay. Fitment note: diesel models only; confirm fitment by OE# 04L907282B/038907281B, VIN, and your vehicle manual before ordering.
• Compatible with 2012 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2013 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2014 Volkswagen Jetta Diesel Glow Plug Controller Relay; Compatible with 2015 Volkswagen Jetta Diesel Glow Plug Controller Relay. If your original module shows a different OE number, pin count, or connector keying, do not install - use the OE number on the old part to match. Related service items: glow plugs, glow plug harness/connectors, and fuse links in the same circuit (inspect/replace as needed).
• Buyer checklist & troubleshooting: this is a replacement glow plug controller/relay for diesel preheat systems - verify engine type (diesel), OE# on your original part, and the 9-pin connector before purchase. Common symptoms of a failing controller can include hard cold starts, extended cranking, glow plug warning light, or glow-plug circuit fault codes; other causes may include bad glow plugs, wiring, fuses, battery/charging issues, or ECU faults. For the most accurate fitment, confirm by OE number and VIN/vehicle manual - do not rely on visual match alone.