VW Passat (3C) Parking Brake

Contents [hide]
1 Coding
2 Basic Setting
2.1 Open Rear Parking Brake
2.2 Close Rear Parking Brake
2.3 Function Test
2.4 Longitudinal Acceleration Sensor (G251)

Coding

Note: When replacing this Parking Brake Control Module it is necessary to save a complete Auto-Scan before repairs. The ABS Module coding will be lost when the Parking Brake Module is replaced and you you MUST have a record of the existing coding or you won't be able re-code the ABS module!


0000010 = Parking Brake without Auto-Hold (North America)
0000011 = Parking Brake without Auto-Hold (Rest of World / PR-UH1)
0000012 = Parking Brake with Auto-Hold (Rest of World / PR-UH2)
0000013 = Parking Brake with Auto-Hold (North America)

Basic Setting

Caution!
Do not perform any of these Basic Settings while the brakes are disassembled! Opening, closing, function tests, and otherwise cycling the Electronic Parking brakes should only be done with the pads and calipers properly installed on the rotors.
Please follow the procedures EXACTLY. There's a reason for every step. If you skip any prerequisites or other steps here, you are likely to experience "issues" for which no documented resolutions exist, in which case we will not be able to help you resolve them.


Open Rear Parking Brake

Prerequisites:
Connect a battery charger.
Cycle the Parking Brake ON, then OFF first.

[Select]
[53 - Parking Brake]
[Basic Settings - 04]
Group 007
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
The brake pads are now opening.
Important: Wait 30 seconds after the brakes stop moving before carrying out the next step.
Due to a firmware problem in some modules, failure to wait can result in damage to the control module.
[Done, Go Back]
[Close Controller, Go Back - 06]

Close Rear Parking Brake

Prerequisites:
Connect a battery charger.

[Select]
[53 - Parking Brake]
[Basic Settings - 04]
Group 006
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
The brake pads are now closing.
Important: Wait 30 seconds after the brakes stop moving before carrying out the next step.
Due to a firmware problem in some modules, failure to wait can result in damage to the control module.
[Done, Go Back]
[Close Controller, Go Back - 06]

Function Test

[Select]
[53 - Parking Brake]
[Basic Settings - 04]
Group 010
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
The brake pads are now opening and closing 3 times.
Important: Wait 30 seconds after the brakes stop moving before carrying out the next step.
Due to a firmware problem in some modules, failure to wait can result in damage to the control module.
[Done, Go Back]
[Close Controller, Go Back - 06]

Longitudinal Acceleration Sensor (G251)

Prerequisites:
System voltage at least 12.0 V.


[Select]
[03 - Brake Electronics]
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 4, the value has to be between -1.5 and +1.5 m/s2.
[Done, Go Back]
[Close Controller, Go Back - 06]

[53 - Parking Brake]
[Basic Settings - 04]
Group 020
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
The status of the Longitudinal Acceleration Sensor (G251) is now beeing displayed.
[Done, Go Back]
To make sure the basic setting was succesful, check the sensor again.
[Close Controller, Go Back - 06]

[03 - Brake Electronics]
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 4, the value has to be between -2.5 and +2.5 m/s2.
[Done, Go Back]
[Close Controller, Go Back - 06]