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Service bulletins for the 2012 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.

1572 on file from NHTSA, as of 2026-10-19.

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

Bulletins, newest first
9613012023-07-24. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER; ELECTRICAL SYSTEM. Keyless Entry Inoperative after Access / Start (KESSY) Module Replacement
9114092023-07-24. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Update Programming RCD-510 Radio (Premium 8)
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.
TT5711072023-07-10. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. The valet key on the 2012-2013 Passat differs from earlier vehicles. The valet key is used to lock the glove box, ski pass-through door (if equipped), and the emergency seat back release cover only. The valet switch in the glove box can be activated to disable the rear lid release switches (including remote function), and then lock the glove box with the valet key. The customer then keeps the plastic valet key and gives the valet the remote flip key.
TT5711042023-07-10. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Remote Start Operation
TT5710042023-07-10. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE; LATCHES/LOCKS/LINKAGES:ELECTRONIC LOCK/LATCH ACTUATOR; ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS; ELECTRICAL SYSTEM. If no communication can be established to the Vehicle electrical system control module J519 (address word 09) in Guided Fault Finding or Vehicle Self Diagnosis, it may be necessary to cycle door locks. It is recommended to cycle both the remote locks and the driver?s door lock switch when attempting to communicate to the module with the scan tool. Ensure all vehicle doors are unlocked before communication is retried.
TT4509042023-07-10. Service bulletin. BACK OVER PREVENTION; STEERING:RACK AND PINION:RACK; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; POWER TRAIN; STEERING; ELECTRICAL SYSTEM; STEERING:STEERING CONTROL MODULE. Some Golf, GTI, Jetta, and Passat vehicles equipped with electromechanical power steering have the G85 steering angle sensor located in the steering rack. These vehicles do not have a G85 in the steering column. To determine G85 location, check the J500 Power steering control module part number in the GFF printout. Do not use the part number on the steering rack for this check.
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.
VOS-23-212023-07-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This communication is a notice for software changes with the ODIS program for specific cars.
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.
TT2711022023-07-05. Service bulletin. ELECTRICAL SYSTEM. When diagnosing a low battery or no charging system concern, start by inspecting the SA1 200 amp fuse in the SA fuse block. DO NOT replace the generator. Perform a voltage drop test between threaded connections 508 and SA1 as shown in Figure 1. If the voltage drop is above .02V, disconnect the battery and remove the cables at the 508 connection and the SA1 connection. Check for continuity of the threaded plate connection between 508 and SA1. If fuse SA1 is found to have an open circuit, replace the fuse and check the threaded connections closely.
TT2614022023-07-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Disconnect both O2 sensors (front and rear), start engine and let idle. Check MVB's 41/4 and 136/4 and verify have both changed from a 1 to a 0 (you may have to drive the car 4 miles to get them to reset to 0). Also a key cycle may be required for values to reset. This forces the ECM to re-learn the O2 sensor adaptation. Once MVB 41/4 and 136/4 read 0, re-connect the O2 sensors, road test and recheck for faults.
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.
TT2612022023-07-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. AdBlue Level Reset Procedure
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.
TB4813032023-06-26. Service bulletin. ELECTRICAL SYSTEM; STEERING. Poor Power Steering Assistance, DTCs 16344 014, 16353 014, 16355 014, 02614 014 Stored in Power Steering Control Module J500
TB4813022023-06-26. Service bulletin. ELECTRICAL SYSTEM; STEERING. Poor Power Steering Assistance, DTCs 16344 014, 16353 014, 16355 014, 02614 014 Stored in Power Steering Control Module J500
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.
TT9612072023-06-13. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER; ELECTRICAL SYSTEM. All keys must be present during key adaptation. Immobilizer reader coil is ALWAYS located in the steering column. DO NOT remove Start/Stop button mounted in center console to access reader coil.
TT9113062023-06-13. Service bulletin. ELECTRICAL SYSTEM. If the radio is switching to the Bluetooth audio selection whenever a paired phone makes any sound, such as typing or an incoming email or text message, check the BT-Audio Autoplay setting in the Media Setup menu as shown below. If BT-Audio Autoplay is on (checked), switch selection off and retest for concern. If radio software is 0016 or 0007, radio may require software update as per TB 91-13-05 (2031136) to allow BT-Audio Autoplay to switch off.

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