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Service bulletins for the 2012 Volkswagen Touareg

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.

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

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Only bulletins with component: Engine control module are shown. Show all

Bulletins, newest first
Dealer 23EP2023-11-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. Vehicles included in this action have been identified as having received the Diesel Approved Emissions Modification (AEM). Volkswagen dealers will inspect the software level on the vehicle's Engine Control Module (ECM) to ensure that the AEM software level is current. If a software discrepancy is found, the ECM software will be updated free of charge. Please note that the ECM software check will automatically result in a check of the Transmission Control Module (TCM) software level, which would also be updated to the AEM level, if a software discrepancy is found. Only in the event that current software is not found on a vehicle, there could be an impact on vehicle tailpipe emissions.
Circular 23EP2023-11-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Vehicles included in this action have been identified as having received the Diesel Approved Emissions Modification (AEM). Volkswagen dealers will inspect the software level on the vehicle's Engine Control Module (ECM) to ensure that the AEM software level is current. If a software discrepancy is found, the ECM software will be updated free of charge. Please note that the ECM software check will automatically result in a check of the Transmission Control Module (TCM) software level, which would also be updated to the AEM level, if a software discrepancy is found. Only in the event that current software is not found on a vehicle, there could be an impact on vehicle tailpipe emissions.
Edition542023-09-18. Service bulletin. SERVICE BRAKES; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. VW Elsa Newsletter
Edition1092023-09-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM. VW Elsa Newsletter
TB0113112023-08-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Update Programming - MIL ON, DTC P0263, P0266, P0269, P0272, P0275 and/or P0278 Stored in ECM Fault Memory
Guide2023-08-14. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). P0102, P1128, P1296 - WA front oxygen sensor faults
TT201301a2023-07-10. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); FUEL SYSTEM, OTHER. To clear static ECM fault P1250 ?Fuel Level Too Low?, add fuel to vehicle and complete a road test of at least 10 miles. Simply adding fuel without completing a road test may not allow fault to clear.
TT2013012023-07-10. Service bulletin. FUEL SYSTEM, OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); UNKNOWN OR OTHER. To clear static ECM fault P1250 ?Fuel Level Too Low?, add fuel to vehicle and complete a road test of at least 10 miles. Simply adding fuel without completing a road test may not allow fault to clear.
TT2012022023-07-10. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:HOSES/VALVES/SENSORS; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. It is recommended to perform the EVAP tank leak test on V6 equipped Touareg through Control Module OBD. The test can be selected from the basic settings selection under the ECM address 01. Select ?Tank Leak Test? basic setting and then select ?Measured Values? so that the readings can be monitored during the test (Figure 2). Select ?Tank Leak, Result? and ?Tank Leak, Status? from the drop down list and press the ?forward? arrow to continue. Press the ?forward? arrow again and then the ?Start? button. The brake and gas pedal must both be depressed in order for the test to begin.
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.
TT24071032023-07-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). When diagnosing fault code P2279-Leaking Air in Intake System, be sure to check the cam timing first.
Dealer 23EM2023-01-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). SERV_ACT - Engine Control Module (ECM) Software
Circular 23EM2023-01-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). SERV_ACT - Engine Control Module (ECM) Software

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