a3 flashing glow plug light

[yalittlebeauty]

hi there.....
i have got a 2004 1.9 tdi a3 with flashing glow plug..... now i have heard about the brake light switch causing this, but my brake lights are working fine. the car also stalls when taking foot off accelerator pedal.....has this switch got a fuel cut off incorporated for mpg while braking??? had the car plugged in and only fault was a rpm flywheel sensor out of range........had it cleared and the fault stayed off when i plugged back in again.......any suggestions would be greatly appreciated. thanks guys..........

[STEWY L]

hi there.....
i have got a 2004 1.9 tdi a3 with flashing glow plug..... now i have heard about the brake light switch causing this, but my brake lights are working fine. the car also stalls when taking foot off accelerator pedal.....has this switch got a fuel cut off incorporated for mpg while braking??? had the car plugged in and only fault was a rpm flywheel sensor out of range........had it cleared and the fault stayed off when i plugged back in again.......any suggestions would be greatly appreciated. thanks guys..........

you "named that tune in one"
the switch will be sending false info to the ecu.
regards,
stewy.

[yalittlebeauty]

hi stewy
thanks for your reply
i dont fully understand what you mean though......is my problem the brake light switch...... i took the car for a good hard drive and it seems to be going ok now no stalling or light on..... ?????
cheers

[Crasher]

The switch is a dual unit, one circuit to the brake lights and the ECU and another to the ECU only as a double check for safety as the throttle is electronic so in an emergency throttle failure situation, pressing the pedal kills the throttle. What you describe is classic brake light switch failure and a fault code read should confirm this.

[yalittlebeauty]

hi crasher
thanks for your response
i have had the car plugged in and the error that appered was cleared and didnt reappear.......the car could idle for a couple of min or just decide to cut out after 10 seconds.... also i have only checked the brake lights when the glow plug light was out and worked fine . th light hasnt come on since this morning.......could this be an intermittent problem
cheers
les

[Crasher]

If the switch section that has a problem is the one the only sends a signal to the ECU, it will not affect the brake lights.