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-   -   ESP Light - Random Always On (https://forum.a8parts.co.uk/showthread.php?t=7)

A8 Doc 21st January 2009 12:45 PM

ESP Light - Random Always On
 
Symptom - ESP Light will appear on cannot be switched off without restarting the engine. Will appear under either light or hard braking.

Solution - Brake pedal switch. Remove lower driver side panel with Torx screwdriver. Remove air ducting and reach up. Undo electrical clip and twist the switch. Install switch and reverse the stripdown.

zed 15th May 2012 01:45 PM

Would a fault code show up in VCDS fro this?

Thanks

PsYcHe 15th May 2012 02:20 PM

Maybe... Are you getting those symptons?

One way to test may be to have someone at the back of the car, and see how much pressure on the pedal it takes to pop the brake lights on.

47p2 15th May 2012 04:57 PM

....or back it up close to a wall when it's dark and press the brake light

PsYcHe 15th May 2012 05:22 PM

Or use a mate you don't like, and keep it in reverse :)

sloss 15th May 2012 05:48 PM

:tuttut: :tuttut: :tuttut: :tuttut: :tuttut:+++

zed 17th May 2012 10:18 PM

I don't think my issue is related to the brake switch now, the ESP light seems to be randomly coming on.

I just had it scanned, and is showing 'brake pressure sensor - electrical fault in circuit'

A8 Doc 11th September 2012 10:48 AM

For what it costs to replace it I would just do it with a new item.

That fixed mine as it randomly came on.

ainarssems 12th September 2012 05:46 AM

Quote:

Originally Posted by A8 Doc (Post 45974)
For what it costs to replace it I would just do it with a new item.

That fixed mine as it randomly came on.

Brake switch and brake pressure sensor that's not the same thing is it?

47p2 12th September 2012 06:13 AM

Quote:

Originally Posted by ainarssems (Post 45995)
Brake switch and brake pressure sensor that's not the same thing is it?

No, two different items

Sir WIll 3rd May 2014 03:23 PM

Just replaced mine as I had on occasion the random warning light on the dash for the ESP.

The one pulled out from the D3 was brown and part number 3B0 945 511, plus it had a shorter plunger on than the new one purchased.

I bought for £10 from eBay a Variant2 Kerr Nelson Brake Light Switch. The plunger and travel was a lot longer which confused me at first as I thought hello its the wrong part.

Reading up its a later design, all fitted and the brake lights work fine and no ESP light anymore.

M-A8 3rd May 2014 03:43 PM

+++

jake0366 4th April 2020 09:42 AM

ESP comes on after 4 mins
 
My 3.0tdi has a problem with the ESP.
It will come on after 4 minutes of the engine running. It doen't matter if the car is moving or not. My problem now is that my usual Garage is 90 miles away so can't get it scanned fully, what with this lock down :mad:

Bushido 14th December 2021 06:00 PM

Jake, my 4.2 tdi has started that exact same thing!! Let me know if you get to the bottom of it matey +++


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