# Service bulletin TT450802

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: 10238963
- Published by NHTSA: 2023\-07\-10
- Manufacturer's number: TT450802
- Manufacturer's date: 2014\-11\-07
- NHTSA component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING; UNKNOWN OR OTHER

## NHTSA's summary

Fault code 02543 000 ?Brake Vacuum Sensor no Display? may be encountered in the ABS module. This may be caused by the hydraulic brake boost function \(HBV\) in adaptation value 61 being turned off \(value = 0\). All Passat Wagons \(including 4motion\) and 3.6L equipped sedans with front drive should have this function turned on \(value = 1\). Change the adaptation value and verify the fault has cleared. Additionally, it may be necessary to lock the vehicle and allow the modules to go to sleep to clear the fault.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10238963-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10238963-9999.pdf)

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

## Components

Brakes, Anti\-lock brakes, Wheel speed sensor

## Vehicles listed

- 2000 to 2008 VOLKSWAGEN PASSAT

## Other bulletins for the same vehicles and component

- [TT451301](/bulletins/10238966.md), 2023-07-10, Service bulletin: WHEELS; SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; BACK OVER PREVENTION; ELECTRICAL SYSTEM; STEERING; STEERING:STEERING WHEEL /HANDLE BAR:YAW/ANGLE SENSOR. After replacing a Bosch 5.7 ABS module, refer to the table below to determine correct module coding value based on vehicle PR codes. Listed login code must be entered under Access/authorization before coding is attempted. After completing coding, G85 steering angle sensor basic settings must be performed before cycling key. To perform G85 basic settings manually in Vehicle self\-diagnosis \(VAS PC\) or Control Module OBD \(ODIS\), start by entering access/authorization code 40168. After code is accepted, turn steering wheel 1 turn left and back to center, one turn right, and then center steering wheel. Select basic settings and enter group 1. Once display changes to ?Sensor OK? or ?Calibration OK?, basic settings have been completed. Cycle key OFF and then back ON. Clear faults to verify repair.
- [TT4506122](/bulletins/10238962.md), 2023-07-10, 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
- [TT4506122](/bulletins/10238621.md), 2023-07-05, Service bulletin: WHEELS; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING; SERVICE BRAKES, HYDRAULIC. Use the following procedure to diagnose active wheel speed sensor complaints:
- [TT450654](/bulletins/10238620.md), 2023-07-05, Service bulletin: SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT. To code a Bosch 5.3 ABS control module, use Vehicle Self\-diagnosis to enter the correct coding value from the tables below. Note that the first table is only applicable to 2.8L V6 equipped vehicles WITHOUT a CAN\-Bus. All 1.8L Turbo vehicles and those 2.8L V6 vehicles that are equipped with a CAN\-Bus should use the second table.
- [TT 45 09 05](/bulletins/10180101.md), 2020-10-06, Service bulletin: SERVICE BRAKES, AIR:ANTILOCK; EQUIPMENT. Antilock brake function test direction.
- [TT 45\-06\-54](/bulletins/10157760.md), 2019-04-08, Service bulletin: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. Tech Tips \(Bosch 5.3 ABS Control Module ? ABS Coding Tables\): This document informs To code a Bosch 5.3 ABS control module, use Vehicle Self\-diagnosis to enter the correct coding value from the tables in this document.
- [TT 45\-06\-54](/bulletins/10156161.md), 2019-04-01, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES, AIR:ANTILOCK. Tech Tips \(Bosch 5.3 ABS Control Module ? ABS Coding Tables\): This document informs To code a Bosch 5.3 ABS control module, use Vehicle Self\-diagnosis to enter the correct coding value from the tables in this document.
- [TT45\-08\-02](/bulletins/10057305.md), 2015-05-13, Service bulletin: SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. PASSAT 2008: INFORMATION REGARDING CODE 02543 000 PRESENT IN THE ABS MODULE WHICH SHOWS"BRAKE SENSOR NO DISPLAY". THIS INCLUDES VEHICLES WITH 3.6L EQUIPPED SEDANS . \*LJ
- [TT\-45\-06\-54](/bulletins/10051242.md), 2013-02-26, Service bulletin: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE. VOLKSWAGEN: UPDATE TO INFORMATION. PROVIDING CORRECT CODING VALUES FOR ABS CONTROL MODULES ON CERTAIN VEHICLES WITHOUT CAN\-BUS. MODELS 1998\-2002 PASSAT. \*PE
- [0517](/bulletins/10016037.md), 2005-08-19, Service bulletin: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. ANTI\-LOCK BRAKE SYSTEM \(ABS\) CONTROL MODULE WARRANTY REPAIR PROCESS. \*TT

JSON: [/v1/bulletins/10238963](/v1/bulletins/10238963)

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