MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: maxamplitude10 on February 25, 2021, 07:35:55 am

Title: Traction Control Light On
Post by: maxamplitude10 on February 25, 2021, 07:35:55 am

Guys parked up the Ed30 yesterday and :confused: all was well, started it this morning and the traction light is on. :confused:
Any common causes i should be investigating to begin with?

Thanks
Max

Title: Re: Traction Control Light On
Post by: mjmallia on February 25, 2021, 07:51:44 am

Any dash lights on, as I had three on mine when I had a faulty rear sensor/magnetic ring.

Maybe plug into VCDS to get some codes.

Title: Re: Traction Control Light On
Post by: GVK on February 25, 2021, 08:42:06 pm

Strange to just have the traction one on.

If there's an ABS fault you usually get the 3 as above!

ABS/Traction/TPMS.

Title: Re: Traction Control Light On
Post by: maxamplitude10 on February 27, 2021, 12:06:25 am

Yes only yellow traction light on dash, very odd......It's like the traction button has been pressed to turn it off?
I will plug it in over the weekend hopefully and see whats stored in codes.

Thanks
Max

Title: Re: Traction Control Light On
Post by: maxamplitude10 on March 05, 2021, 06:35:34 pm

Update, just plugged into computer and have the following code:
059 B - Brake Pressure Sensor (Electrical Fault In Circuit)

Any ideas guys?

Cheers Max

Title: Re: Traction Control Light On
Post by: pudding on March 05, 2021, 08:26:22 pm

It will either be the brake light switch (behind the brake pedal) or the brake pressure sensor, which should be screwed into the ABS pump.

Title: Re: Traction Control Light On
Post by: maxamplitude10 on March 05, 2021, 10:14:17 pm

Pudding is the pressure sensor available separately from the ABS pump itself then?

I'll check both items tomorrow and feedback any findings..

Thanks again
Max

Title: Re: Traction Control Light On
Post by: pudding on March 05, 2021, 11:44:21 pm

Hmmm, looks like the pressure sensor is actually built into the ABS pump  :confused:

https://www.actronics.co.uk/acinsights/ate-mk60

Title: Re: Traction Control Light On
Post by: GVK on March 05, 2021, 11:48:07 pm

Back in the day when I worked at VW this fault under warranty was a case of checking MVB for brake light switch input then if that was ok , new ABS pump.

Nowadays can get them repaired by people like BBA reman. ECU testing etc.

https://www.mk5golfgti.co.uk/forum/index.php/topic,131407.msg1146552.html#msg1146552

As in above thread I have seen this fault so common in Ford/VW/BMW when working in the main dealers.

Title: Re: Traction Control Light On
Post by: maxamplitude10 on March 06, 2021, 08:11:09 am

Guys thanks for the input, after further investigation and collecting some live data I have come to the conclusion the abs pump is knackered. I have a constant reading of 214 BAR from pressure sensor which doesn't change when brake pedal is pressed and it also seems like an insanely high pressure to have in a braking system!!!!!!
Also after some googling as GVK states this seems to be a common issue..... Time to get the toolbox out again :confused:

Cheers Max

Title: Re: Traction Control Light On
Post by: pudding on March 12, 2021, 07:03:03 pm

A good excuse to upgrade to the MK6's XDS pump  :laugh:  I don't know how involved it is though!