WenmarOpen by Wenmar Pro

Service bulletins for the 2008 Volkswagen Passat

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

642 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
TT5713022023-07-17. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. If key blade is found to stick or bind when opening or closing, check position of roll pin that secures key blade to mechanism. If roll pin is sticking out on either side (as shown below), do not replace key. Instead, use appropriate sized punch and hammer to drive in the roll pin so that it is flush with edge of mechanism.
TT5512032023-07-10. Service bulletin. LATCHES/LOCKS/LINKAGES:ELECTRONIC LOCK/LATCH ACTUATOR; STRUCTURE:FRAME AND MEMBERS; ELECTRICAL SYSTEM:INTERIOR LAMPS/BULBS. When diagnosing a power rear lid that will power open but will not power close, check operation of luggage compartment lamp W3. Lamp should be on with rear lid open and off with rear lid closed.
TT4609042023-07-10. Service bulletin. PARKING BRAKE:ELECTRICAL:SWITCH; ELECTRICAL SYSTEM; PARKING BRAKE:ELECTRICAL:CONTROL MODULE; PARKING BRAKE. If fault code 03200 or 16352 is present in the Electromechanical Parking Brake (EPB) module, it may be due to the switch and module not being synchronized.
TT4509032023-07-10. Service bulletin. AIR BAGS; STEERING; SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE; ELECTRICAL SYSTEM; STEERING:RACK AND PINION:RACK. If, after replacement of the steering rack, fault code 01309 008 is set in the ABS/ESP module only, follow the test plan in GFF for Driver Steering Recommendation (DSR) or channel 3 activation. If the test plan fails to clear the fault, follow the direction below using Vehicle Self Diagnosis in Address Word 44 - Steering Assistance
TT45061222023-07-10. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER:SENSOR/SENDING UNIT; SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE. Use the following procedure to diagnose active wheel speed sensor complaints
TT0014032023-07-10. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI; ELECTRICAL SYSTEM. When performing SVM updates, the scan tool should be hardwired to the vehicle and the Bluetooth physically turned off. A hard wired internet connection is also recommended.
V2719012011894_22023-07-10. Service bulletin. ELECTRICAL SYSTEM. Battery Testing and Charging using Midtronics VAS6161 and or GRX3000 Vas Charger
V0118122014603192023-07-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Software Version Management (SVM) instruction.
TT2713012023-07-05. Service bulletin. ELECTRICAL SYSTEM. When diagnosing a generator charging concern, it is recommended to verify operation of the one way clutch located in the generator pulley (if equipped) before replacing generator assembly. To check the one way clutch, remove the belt from the generator pulley and use a trim removal tool to hold fan blades inside generator, as shown below. When attempting to turn pulley by hand with fan blades held, pulley should spin freely in only one direction. If pulley spins freely in both directions, the one way clutch has failed and should be replaced before continuing diagnosis.
TT2613032023-07-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Use of aftermarket air filters such as cotton bed steel mesh or cone style, can cause the MAF sensor to not read accurately, affecting vehicle performance and critical monitoring functions for the diesel particulate filter. This can also result in premature DPF failure. Only use factory air filters. The use of aftermarket air filters is not supported as the system was designed and calibrated to work with factory air filters.
TT2413032023-07-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). When diagnosing a vehicle concern, and fault P130A ?Hide Cylinder? is found in the Engine Control Module (ECM), be aware that Engine Control Module (ECM) fault P130A ?Hide Cylinder? indicates a cylinder shut down and does not require diagnosis.
TT9714022023-06-13. Service bulletin. ELECTRICAL SYSTEM. The DLC is intended for use with diagnostic scan tools and by emissions testing stations. However, aftermarket devices (i.e., drive data recorders) that connect to the DLC have now become available.
TT9614022023-06-13. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. When replacing the complete vehicle lock set (all vehicle keys and lock cylinders) for any reason, be aware that the ?Adapt keys? test plan will not allow the new keys to adapt to the vehicle. Instead, perform the test plan for ?New identity?. During this test plan, make the appropriate selection to indicate only the lock set has been replaced, as shown below in figures 1 and 2.
TB1916012023-05-22. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Electric coolant fans continue to run after ignition is switched off.
V2719012011894222023-01-06. Service bulletin. ELECTRICAL SYSTEM. Battery testing and charging using special tools VAS6161 & GRX3000VAS Charger. Updated to include additional model year applicability.
561065760A2022-09-26. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. Installation of original remote start feature accessory
CT_batt_charger2022-09-01. Service bulletin. ELECTRICAL SYSTEM. Minimum battery charger requirements during software updates
V2719012011894202022-07-01. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY. Battery Testing and Charging using VAS6161 and or GRX3000VAS
V0118122014603182022-07-01. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM):SOFTWARE; UNKNOWN OR OTHER. Software Version Management (SVM) instruction. Update to require 70amp minimum battery charger during procedure.
V2719012011894192022-06-07. Service bulletin. ELECTRICAL SYSTEM. Battery Testing and Charging using recommended VW test equipment.
TT 27-10-02_42022-06-07. Service bulletin. ELECTRICAL SYSTEM. Battery Tester VAS 6161 introduction.
V2715032016076112022-04-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Discharged Battery, Diagnosis for excessive current draw.
VOS-22-072022-03-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. "Instructional document regarding the installation of a hotfix for the ODIS service software. Hotfix is to be used during the following actions: Brake Electronics (ABS) A3 Passat NMS Software Configuration/Coding
V2719012011894172022-01-06. Service bulletin. ELECTRICAL SYSTEM. Battery testing using VW special tools, updated to include additional model year applicability and include I.D.4.
A0021552011732122022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.