3 warning lights on Dash - Brake Sensor?

[Steveatesh]

Quick update - put on the diagnostic computer and it is telling us it's the yaw sensor, which is something to do with the DSC. apparently it's situated under the drivers seat so that's coming out tomorrow to check for anything obvious as it's quite an expensive part apparently

 

[Wa'ya]

Just went through this on mine, how is it driving? does it pull hard to one side then the other? My code read right rear speed sensor, What fixed it was changing the wishbone bushings, an alignment, then a steering angle sensor calibration.

The bushings were bad which pulled the front end out of alignment. Steering sensor was telling the computer I was turning, and the rear speed sensors were telling it I was going straight.

 

[Cyberface]

Had those lights and that sensor fault just before Xmas. The part it's self is £360+vat!!
Cos me just shy of £500 to get it fixed.

 

[Wa'ya]

What part did you have bad Cyberface?

 

[Steveatesh]

SO to investigate further I took the drivers seat out today and under the carpet was soaken wet The cables running into the yaw sensor were dripping, so this is the likely reason the fault "Yaw electrical failure" was coming up.
I spent a couple hours drying it all down. The leak was probably down to a small trickle that used to come through the door membrane (fixed before xmas) building up, but the carpet actually felt dry on the surface and I had not realised it was soaken underneath. Lesson there I think about stitch in time and all that!

So, I'm going to have the code reset and hope thats fixed it rather than the actual sensor being bust. I'll keep everything crossed for next week!

 

[Wa'ya]

Good luck Steve hope you got it!

 

[Cyberface]

It was something to do with a positioning sensor longitude/latitude or something.
It was under a seat was an hours labour to change just really expensive part!

 

[StJimmyL]

I had this EXACT combination of lights. For me it was a wet rear ABS sensor. I took the panels off for soft top frain clearing and couldnt get them back on so drive the car. Wet sensor and lights. a day in a garage and no more lights!

 

[Steveatesh]

Final update for anybody else with the same problem. I had to replace the yaw rate sensor which is beneath the drivers seat. I was quoted over £500 to do this, the bulk made up by the cost of the part, around £380 new.
So, turns out the actual work is very simple. About 15 minutes to remove the drivers seat and access the sensor.

While under there I dried out the carpets too, which took some time.

As regards the yaw rate sensor, I went through ebay. The sensor part number shows that the exact same part is used on E46 (3 series) cars and some minis too. I bought one that had been on an E46 for £40.00 delivered. Fixed to the car and replace seat ( another 20 minutes). Turned engine on and no warning lights, everything working fine. So the sensor from another model didn't need setting up with a computer, it is simply plug and play.

Simple job, simple tools, total cost £88 including initial diagnosis. Thanks for your help and advice everybody.

 

[Shenanigans]

I got these three warning lights when my engine misfired! Drove it straight to the dealer, engine turned off, on again and the lights disappeared. Misfire was logged on the computer though but they couldn't find a fault with any of the plugs etc so just cleared the faults.

Couple of days later I hear more popping, along with the three lights. I just pulled over, switched off and on again and all is okay.

Sent from my GT-I9300 using Tapatalk

 

[Mark-Z4]

Your configuration of warning lights can also mean a failure of the DSC unit.

I've just had the same unit replaced....

http://www.z4-forum.com/forum/viewtopic.php?f=3&t=62868

You can try unplugging the battery, it worked for me the first time. Also check your tyre pressures are ok.

I would get the fault read when you can, then you know what your dealing with.

Mark

 

[sidyid]

The above three warning lights have appeared on my wife's 2003 2.5 Z4. They stay on permanently, I have tried charging the battery and resetting by pressing in the DSC button while starting car but no joy

I'd be grateful if anybody can suggest what might be the problem - my first thought is a brake sensor.

Any suggestions or suggested fix appreciated thanks

I have got exactly the same lights come up, battery good, new pads and will not re-set with OBD 2

 

[Roundozo]

Usually ABS sensor. Mine packed up on my old 3 series (E46) and would show all three lights.

 

[jampudding]

Mine was the Yaw rate sensor. And I got the part off eBay for £25. That was about 18 Months ago.

 

[ezraharvey]

I had a similar light show on my dash when leaving my iPod connected to the DICE connector overnight(probably over a weekend actually). Read on a 3 series forum about someone with the same issue and since I've taken it out of a nighttime, not had the same problem- been about 2 months now? If you leave anything non stock connected that might drain down the battery, might be worth a shot?

 

[Rucky]

Hi, did you ever get this fixed and if so what was it. I have same 3 lights Brake warning, Tyre Press and DSC.
I also have a Steering angle sensor error 5E40 which wont clear.
Would appreciate how you got on?

 

[Rucky]

This did in fact turn out to be the steering angle sensor itself packing up.
Not a cheap spare at £250 but it did fix the problem.

Rather than have the hassle of removing the column myself I was quoted £80 to replace the SAS which I thought was very good value.
Carried out by Forza it was done in a morning!

 

[javis20]

My son's 2003 E85 had this exact issue. All we did was disconnect the electrical connector from the ABS module and then plug it back in. Then we connected to INPA and reset the codes. Never came back. Its been almost 2 years now.

 

[ph001]

My son's 2003 E85 had this exact issue. All we did was disconnect the electrical connector from the ABS module and then plug it back in. Then we connected to INPA and reset the codes. Never came back. Its been almost 2 years now.

Are you sure it was the exact same lights? ABS unit related faults don't normally bring on the tyre pressure warning light.

 

[javis20]

Yes, same lights. I verified the speed sensors and was almost convinced it was the steering angle sensor. But then i seen a youtube video of someone solving the problem by just re engaging the abs unit plug. I did just that and cleared the codes. Problem solved.
Symptoms of my problem were the 3 lights and you couldn't reset the tire pressure system. Anti lock brakes worked just fine.