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Service bulletin TT 27 19 01

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10155770
Published by NHTSA2019-04-01
Manufacturer's numberTT 27 19 01
Manufacturer's date2019-02-15
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

Start/Stop diagnosis.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, 12-volt battery

Vehicles listed
VOLKSWAGEN ATLAS2018, 2019
VOLKSWAGEN GOLF2019
VOLKSWAGEN GTI2019
VOLKSWAGEN JETTA2019
VOLKSWAGEN TIGUAN2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
V2719012011894242023-08-04. Service bulletin. Battery Testing and Charging using Midtronics VAS6161 and or GRX3000 Vas Charger
TT 27 20 02_32023-06-06. Service bulletin. Battery adaptation procedure when battery label is missing.
V2715032016076112022-04-06. Service bulletin. Discharged Battery, Diagnosis for excessive current draw.
TT 27 20 02_12021-01-08. Service bulletin. Battery Id for testing
TT 27 19 032020-07-07. Service bulletin. Diagnostic for no crank concern.
Circular26N6REV12020-06-04. Service bulletin. Over time and mileage, the factory-installed catalyst may not perform as required. If the effectiveness of the catalyst is reduced, this may result in increased tailpipe emissions and the vehicle could fail an emissions (IM) inspection. Updated claiming instructions to include connecting battery charger. Updated parts return core information in Section E.
Circular26M4REV12020-06-04. Service bulletin. Over time and mileage, the factory-installed catalyst may not perform as required. If the effectiveness of the catalyst is reduced, this may result in increased tailpipe emissions and the vehicle could fail an emissions (IM) inspection. Updated claiming instructions to include connecting battery charger.
TT 01-19-082019-12-06. Service bulletin. Battery voltage high end requirement.
19TiguanSrvXprs2019-12-06. Service bulletin. "2.pL Turbo: DGUA REMOVED: Oil Filter (through 04/28/18) Miscellaneous: Dugst and Pollen filter: REMOVED Harmful Substance Filter: REMOVED Rear (REMOVED) from Battery: 000 915 105 FC Batteries 5K0 915 105*, 1S0 915 105*, & 6R0 915 105* :REMOVED Battery: Updated part number"
19JettaServXprs2019-12-06. Service bulletin. "1.4L DGXA: ADDED DJXA 2.0L DKFA: Oil filter: Updated part number Drain Plug Gasket: Updated part number Air filter: Updated part number Miscellaneous: Battery: Updated 3 part numbers"