Audi A4 Glow plug light

[Allyn78]

Hi can anybody help me I have 2008 a4 170 tdi((b7) and the dpf light is on also the glow plug light keeps on flashing.
please help

 

[Darren92]

Scan it, no point in guessing to what it could be on a modern car.

 

[NOZ]

I had the glow plug light on mine a while back now and it was the brake switch behind the brake pedal, I think I posted on it, 5 min job and under £20 sorted mine right out might be worth renewing that for 20 bucks first, instead of paying for a computer diagnosis

Sent from my D6603 using Tapatalk

 

[Retroman]

When the glow plug light flashes on a TDI, whilst the car is driving, it denotes a fault in the "engine management system". If the unique DPF light is on the DPF requires regeneration. As said above, the car needs to be plugged into a diagnostic tool to check what is wrong - the two faults may be linked. For example, a sensor fault somewhere may be preventing the DPF from regenerating naturally.

 

[Retroman]

This US articles suggests the DPF warning light and "glow plug" light, come on together when the DPF reaches 75% full

http://www.myturbodiesel.com/1000q/vw-jetta-tdi-golf-dpf-filter.htm