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Service bulletins for the 2015 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.

1134 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: 12-volt battery are shown. Show all

Bulletins, newest first
UPDATE23N72023-08-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TDI Battery Management Software Update
V2719012011894242023-08-04. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Testing and Charging using Midtronics VAS6161 and or GRX3000 Vas Charger
TT 27 20 02_32023-06-06. Service bulletin. EQUIPMENT:OTHER:LABELS; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery adaptation procedure when battery label is missing.
V2715032016076112022-04-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Discharged Battery, Diagnosis for excessive current draw.
TT 27 20 02_12021-01-08. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:LABELS. Battery Id for testing
V271902-20339782019-04-22. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Update to model year applicability. Generator Replacement Charging System inoperative/malfunctions, noise from engine compartment, accessory drive belt damaged or missing.
TT 2710022019-04-08. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Updated to include model year 2014 thru 2018 applicability.
TT 58 18 012018-12-10. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Key Battery Diagnostic Process
TT 57 18 022018-12-03. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT. Remote Ket battery diagnostics. Updated to change incorrect repair manual group number (from TT581801 to TT571802)
TT 27 18 012018-12-03. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Update to model year applicability and Battery testing information.
Update Bulletin2017-11-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. UPDATE Technical Bulletin (TDI Battery Management Software): This update has been proactively released to prevent the battery from becoming discharged due to a unique set of circumstances during the CAN bus diagnostic phase, leading to excessive parasitic draw and a discharged battery while the vehicle is parked.
Update Bulletin2017-10-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. UPDATE Technical Bulletin (TDI Battery Management Software): The battery can become discharged when the ECM "wakes-up" the CAN bus to do a diagnostic (~9 hours after vehicle shut-off). During that diagnostic time-window, if the door is opened or the ignition is switched ON, the ECM goes into a mode that can continuously wake-up the CAN bus, leading to excessive parasitic draw and a discharged battery while the vehicle is parked. This update has been proactively released to prevent the battery from becoming discharged due to a unique set of circumstances during the CAN bus diagnostic phase, leading to excessive parasitic draw and a discharged battery while the vehicle is parked.
V271502 20339782017-10-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Technical Bulletin: The document refers to diagnosing charging systems for issues
V271503 20160762017-10-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Technical Bulletin: Battery, Discharged, Diagnosis for Excessive Static Current Draw
V271501 20118942017-10-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Technical Bulletin: Battery, Testing and Charging Using Midtronics VAS6161, MCR340V, InCharge 940, or GRX3000VAS Charger
TB-23N72015-04-01. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. VOLKSWAGEN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION UPDATED TO PREVENT BATTERY FROM DISCHARGING DUE TO CIRCUMSTANCES THAT ARE UNIQUE DURING DIAGNOSTIC PHASE OF CAN BUS. MODEL 2015 PASSAT, JETTA, GOLF, BEETLE & CONVERTIBLE. *PE UPDATED 4/3/15. *PE

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