# Service bulletin Dealer Letter\-Da

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.

- Type: Service bulletin
- NHTSA id: 10121586
- Published by NHTSA: 2017\-10\-31
- Manufacturer's number: Dealer Letter\-Da
- Manufacturer's date: 2014\-10\-27
- NHTSA component: ENGINE; EQUIPMENT:ELECTRICAL

## NHTSA's summary

VOLKSWAGEN DEALERSHIP COMMUNICATION \(Upcoming UPDATE 97AX \- BCM Software\): Due to an over\-sensitive diagnostic routine, the Body Control Module \(BCM\) may incorrectly detect a short circuit for one front turn signal and deactivate the flasher for one ignition cycle. This issue only occurs during certain unique engine starting sequences and at cold start. The corrective action taken for this issue was to Install new BCM software via SVM code 3B36.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10121586-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10121586-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Equipment and accessories

## Vehicles listed

- 2015 VOLKSWAGEN GOLF
- 2015 VOLKSWAGEN GTI

## Recalls for the same vehicles and component

- [16V647000](/recalls/nhtsa/16V647000.md), 2016-09-07: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
- [15V705000](/recalls/nhtsa/15V705000.md), 2015-10-26: ENGINE AND ENGINE COOLING:ENGINE; SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
- [2015504](/recalls/tc/2015504.md), 2015-10-23: Engine

## Other bulletins for the same vehicles and component

- [V0116152014815\_20](/bulletins/11038146.md), 2026-10-06, Service bulletin: ENGINE. Suggested fuel additive
- [V1718062017813\_24](/bulletins/11035762.md), 2026-08-05, Service bulletin: ENGINE. Oil Consumption Measurement and Electronic Oil Consumption Measurement
- [V1719012012855\_81](/bulletins/11034617.md), 2026-07-07, Service bulletin: ENGINE. Volkswagen Engine Oil Standards
- [TT 13\-20\-01\_3](/bulletins/11034614.md), 2026-07-07, Service bulletin: ENGINE. Instruction, how to lubicate engine before initial start.
- [TT 10\-18\-02\_2](/bulletins/11034613.md), 2026-07-07, Service bulletin: ENGINE. Lubricating engine components before reassembly.
- [VOS\-26\-21](/bulletins/11030847.md), 2026-04-06, Service bulletin: ENGINE. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the error message ERP0204E could occur during perform initial operation, software configuration, SVM updates for any control module\(s\) etc.
- [WLA\-25\-11](/bulletins/11025452.md), 2025-11-10, Service bulletin: ENGINE. Coolant Bleed Procedure
- [V2125012077512\_2](/bulletins/11025438.md), 2025-11-10, Service bulletin: ENGINE. Turbocharger repair or replace due to stuck wastegate.
- [V1917012022548\_15](/bulletins/11025437.md), 2025-11-10, Service bulletin: ENGINE. G12Evo can now be mixed with previous coolants.
- [V1718062017813\_23](/bulletins/11025436.md), 2025-11-10, Service bulletin: ENGINE. How to measure engine oil consumption.

JSON: [/v1/bulletins/10121586](/v1/bulletins/10121586)

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