Yellow Parking Brake Light + DSC Light suddenly came on

IAmOrion · Post by **IAmOrion** » Tue Apr 17, 2018 12:38 pm

: 1FCD03BD-C553-4C06-835C-75ADCD1B5EDE.jpeg (290.48 KiB) Viewed 1487 times

So these lights suddenly came on today. Not even left my drive.

Before I dig out the laptop with ISTA etc (since I didn’t find anything obvious in the manual, although maybe a case of “woods for the trees”)

Does anyone know what this means?

Edit: Video from ISTA

I’m obvs applying the break at small intervals. But I’m guessing both should be -0.27 ish and NOT 40 like sensor 2 is!?

RustyZ4 · Post by **RustyZ4** » Tue Apr 17, 2018 1:13 pm

Pads getting low?

IAmOrion · Post by **IAmOrion** » Tue Apr 17, 2018 1:36 pm

RustyZ4 wrote: ↑Tue Apr 17, 2018 1:13 pm Pads getting low?

Nope

I found some other threads that point to a pressure sensor being the problem

markalp · Post by **markalp** » Tue Apr 17, 2018 1:57 pm

IAmOrion wrote: ↑Tue Apr 17, 2018 12:38 pm 1FCD03BD-C553-4C06-835C-75ADCD1B5EDE.jpeg

So these lights suddenly came on today. Not even left my drive.

Before I dig out the laptop with ISTA etc (since I didn’t find anything obvious in the manual, although maybe a case of “woods for the trees”)

Does anyone know what this means?

I have no idea, however I love your Picture to post time.. 2 mins..

IAmOrion · Post by **IAmOrion** » Tue Apr 17, 2018 2:02 pm

markalp wrote: ↑Tue Apr 17, 2018 1:57 pm I have no idea, however I love your Picture to post time.. 2 mins..

would’ve been quicker but only had 3G signal and was being slow to upload haha

First post updated with YouTube video.

Looks like it’s pressure sensor 2 playing up. Maybe it was triggered by temp increase. Who knows. Does any one have to hand the part number? And a guide to change? I didn’t spot it on TIS but only looked quickly as I gotta get to work

ph001 · Post by **ph001** » Tue Apr 17, 2018 2:08 pm

Realoem.com for the part number. Not difficult to change (I would do both as the other one typically fails soon after). Wrapping clingfilm over your brake fluid opening can limit amount of brake fluid you lose but if you are quick between removing old and screwing the new one in you probably won't even have to bleed brakes. The Chinese ones from Ebay work just fine (3 yrs and counting on the E46 M3).

IAmOrion · Post by **IAmOrion** » Tue Apr 17, 2018 2:13 pm

ph001 wrote: ↑Tue Apr 17, 2018 2:08 pm Realoem.com for the part number. Not difficult to change (I would do both as the other one typically fails soon after). Wrapping clingfilm over your brake fluid opening can limit amount of brake fluid you lose but if you are quick between removing old and screwing the new one in you probably won't even have to bleed brakes. The Chinese ones from Ebay work just fine (3 yrs and counting on the E46 M3).

Awesome, I’ll take a look as soon as I’m on my computer - thanks. I’ve got MOT middle of May so will be doing a few other bits shortly anyways.

thecremeegg · Post by **thecremeegg** » Wed Apr 18, 2018 10:14 am

Mine does this every so often, like you say I think it's a faulty sensor. Should really fix it but it's really intermittent!

ph001 · Post by **ph001** » Wed Apr 18, 2018 1:27 pm

thecremeegg wrote: ↑Wed Apr 18, 2018 10:14 am Mine does this every so often, like you say I think it's a faulty sensor. Should really fix it but it's really intermittent!

Yep, that's exactly how mine failed. Intermittent for about 6 months then just got more and more regular.

csquire4 · Post by **csquire4** » Wed Apr 18, 2018 6:41 pm

With my high pressure brake sensor part number was 34521164458, cost £92 from Ocean BMW (via eBay).

There are cheap versions on ebay but I would avoid.

IAmOrion · Post by **IAmOrion** » Wed Apr 18, 2018 6:44 pm

csquire4 wrote: ↑Wed Apr 18, 2018 6:41 pm With my high pressure brake sensor part number was 34521164458, cost £92 from Ocean BMW (via eBay).

There are cheap versions on ebay but I would avoid.

That's the part number I've ordered. I'm assuming they're both the same (there's 2). I only paid £25 each so will see how they hold up

ph001 · Post by **ph001** » Wed Apr 18, 2018 9:32 pm

IAmOrion wrote: ↑Wed Apr 18, 2018 6:44 pm I only paid £25 each so will see how they hold up

They will be fine.

cmaza · Post by **cmaza** » Tue Apr 24, 2018 5:09 pm

Iv had this come up on mine now too. Reading around it seems to be knackered pressure sensors. How has your repair come along? any guides on how to perform the replacement?

Cheers

IAmOrion · Post by **IAmOrion** » Tue Apr 24, 2018 5:13 pm

cmaza wrote: ↑Tue Apr 24, 2018 5:09 pm Iv had this come up on mine now too. Reading around it seems to be knackered pressure sensors. How has your repair come along? any guides on how to perform the replacement?

Cheers

I haven't had a chance to do it yet. It's supposed to be straight forward and easy - but will make a guide with pics when I actually do it.

I ordered these ones: www.ebay.co.uk/itm/GENUINE-BMW-ABS-DSC- ... 1220138731

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