Yellow brake light on?

synthedup · Post by **synthedup** » Tue Mar 07, 2017 11:38 am

Hi guys, despite a search I can't find an answer.

I have the brake pad wear sensor on, currently yellow. However I changed all the pads and discs about 3 weeks ago so I know they're ok. What else could it be? The brake fluid looks topped up and the car drive fine.

Any ideas?

Thanks

markplant · Post by **markplant** » Tue Mar 07, 2017 11:49 am

I'm sure I've read people change the sensor at the same ,

jamie_z4 · Post by **jamie_z4** » Tue Mar 07, 2017 11:51 am

synthedup wrote:Hi guys, despite a search I can't find an answer.

I have the brake pad wear sensor on, currently yellow. However I changed all the pads and discs about 3 weeks ago so I know they're ok. What else could it be? The brake fluid looks topped up and the car drive fine.

Any ideas?

Thanks

Theres a reset procedure on the e46 - it'll probably be the same for the z4, you have to put the ignition in position 2 for around 45 seconds and the light will go out, not 100% but worth a go

Lance · Post by **Lance** » Tue Mar 07, 2017 12:07 pm

jamie_z4 wrote:
synthedup wrote:Hi guys, despite a search I can't find an answer.

I have the brake pad wear sensor on, currently yellow. However I changed all the pads and discs about 3 weeks ago so I know they're ok. What else could it be? The brake fluid looks topped up and the car drive fine.

Any ideas?

Thanks
Theres a reset procedure on the e46 - it'll probably be the same for the z4, you have to put the ignition in position 2 for around 45 seconds and the light will go out, not 100% but worth a go

What he said

synthedup · Post by **synthedup** » Tue Mar 07, 2017 1:21 pm

markplant wrote:I'm sure I've read people change the sensor at the same ,

All new ware sensors have been installed and it was reset 3 weeks ago, been fine until this morning when it randomly came on again

MJJamieson · Post by **MJJamieson** » Tue Mar 07, 2017 1:58 pm

Have you checked your brake fluid level? It could be low....

john-e89 · Post by **john-e89** » Tue Mar 07, 2017 2:51 pm

Perhaps a pressure sensor either outside of the ABS pump on pre-facelift cars or inside the pump on the facelift. A code reader would pick it up.

Lance · Post by **Lance** » Tue Mar 07, 2017 3:51 pm

When I first got my Z4 a lorry in front of me shredded a tyre, part of which I drove over which tore out one of the brake sensors, bringing up the dash light.

You haven't had something dislodge one have you?

Once replaced, ignition on without starting, wait a while, 30 secs to a minute and it goes out.

Steve84N · Post by **Steve84N** » Mon Mar 13, 2017 1:58 pm

Do you have Hill Start Assist and has it stopped working?

It's where when you take your foot off the brake it holds the car for a couple of seconds to stop you rolling. Turns off when you apply throttle.

If so then check my thread out: viewtopic.php?f=3&t=90126&p=1349241#p1349241

kis · Post by **kis** » Thu Mar 16, 2017 10:59 am

synthedup wrote:
markplant wrote:I'm sure I've read people change the sensor at the same ,

All new ware sensors have been installed and it was reset 3 weeks ago, been fine until this morning when it randomly came on again

Could have taken a while to notice?
I've filled up tyre pressure before a journey to work, and it's popped up on the dash that the pressure it different (because I didnt reset it) towards the end of the journey, about 45miles later...

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