Author Topic: 2008 GTI - factory cruise control just stopped working  (Read 139 times)

Offline haribo_golf

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2008 GTI - factory cruise control just stopped working
« on: November 11, 2020, 05:05:43 PM »
Hi all,

My first post here - I've read lots of threads about cruise control but my issue doesn't quite seem to fit with what I've seen...

It was working fine until the beginning of last week when a brake light bulb went. I have replaced the bulb (two different ones to be sure) but still not working.

I have scanned with VCDS and found one possibly relevant fault:

Address 01: Engine        Labels:. 06F-907-115-AXX.clb
   Part No SW: 1K0 907 115 Q    HW: 8P0 907 115 B
   Component: 2.0l R4/4V TFSI     0020 
   Revision: 5BH16---    Serial number: VWX7Z0GD3N68I6
   Coding: 0403000318070160
   Shop #: WSC 01279 785 00200
   VCID: 3460ABB0579C70EF73-8060

2 Faults Found:
000256 - Mass Air Flow Sensor (G70)
               P0100 - 004 - Supply Voltage - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 166661 km
                    Time Indication: 0

             Freeze Frame:
                    RPM: 0 /min
                    Load: 0.0 %
                    Speed: 0.0 km/h
                    Temperature: 55.0°C
                    Temperature: 30.0°C
                    Absolute Pres.: 1010.0 mbar
                    Voltage: 12.065 V

005699 - Please check DTC Memory of Electric Load Controller
               P1643 - 001 -
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 2
                    Fault Frequency: 24
                    Reset counter: 255
                    Mileage: 167056 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 15:31:50

             Freeze Frame:
                    RPM: 341 /min
                    Load: 41.9 %
                    Speed: 0.0 km/h
                    Temperature: 83.0°C
                    Temperature: 39.0°C
                    Absolute Pres.: 1020.0 mbar
                    Voltage: 11.430 V

I don't think these would cause cruise to stop, but happy to be told otherwise. I have the MAF fault on the list as well!

I have also run the live diagnostic and could see the brake and clutch switches changing the second field but none of the stalk buttons made the fourth field change. I'm using this for reference: http://wiki.ross-tech.com/wiki/index.php/Checking_Cruise_Control_using_Measuring_Values

At the moment I'm thinking I need to replace the stalk? Any advice appreciated.

Thanks, James