Did your mechanic put a new sensor on when he changed the brakes? You can't reuse the old ones, once it's been unplugged you have to throw it and get a new one. They are cheap though, think they are less than £20 from BMW

 

Just reread your post and saw that you had the cables replaced, it might depend on how he tried to reset the brake wear on the on board trip computer, I think you may need to do it through the OBD port but I'm not completely sure.

 

Did your mechanic use a genuine BMW sensor? We have had lots of problems with fake / aftermarket versions.

 

I think he did, but that could of course be one of the suggestions to get rid of the problem, that I bought some genuine ones and have him install those...

Could the ABS sensor change help me?

Other ideas?

 

ABS / Wheel Speed Sensors have nothing to do with brake life / brake wear sensors.

Why do you have --.-- on the front? Did your mechanic try resetting those too, or something?

 

I drive 38-40.000 miles a year, so I change the brakes every 2nd year or so.

I had my fronts changed last year, and when I drove into the hole and the ODB showed the red car on ramp, we tried resetting everything including front brakes to make the illuminated handbrake light go away.

So maybe I should buy new sensors for front and back, and have him install them as an attempt?

thanx for your suggestions

 

We have 2 stage sensors. Resetting early will always cause ECU confusion, they expect wear events to happen in the correct order.

 

I would try changing the brake wear sensors before doing anything else. The one on the rear may have had an internal fault that has become exasperated from shock when you hit the hole.
As said, only use genuine sensors as the cheaper ones can cause faults like you are experiencing.

 

Should I replace both?

It only shows a fault on the rear, but in the ODB, both front and rear reads --------

 

I would and then reset the system.

 

I'd change both. If you can't reset via the dash, you might need a computer / Snap-on / BMW.

 

Once you get the _ _ _ _ _ lines I don't think you can do it via the dash, well I couldn't anyway

And had to use a snap on tool as macro said

N54 135i jb4+everything
( Team Rob aka Robbles)

 

Will one of those 20 quid fault code readers not reset the OBC ?

 

20quid code readers can read obd codes and very little else
It needs to be a very Good quality diagnostic tool

N54 135i jb4+everything
( Team Rob aka Robbles)

 

Update:

Due to a faulty ABS ring and sensor, I had my mechanic change both the front and rear brake pad wear sensors...
That did NOT fix the problem.
I still get the red car on ramp on startup, my handbrake light is on all the time, and the iPhone APP BMWhat reads an error on rear brake pad wear.

I've tried resetting through the dash, so now I have ------- both front and rear.

Only idea I can come up with is to go to BMW and pay big bucks them to plug in their reset tool...

Anyone else??

 

Just a thought but when you connect the cable to the connector block is it actually making a connection?

Sent from my iPhone using Tapatalk

 

Once you get the - - - - on the dash then the system is confused and needs resetting at main dealer or an indi with decent diagnostic tools

Did you fit own pad sensor wires?

 

Once you get the - - - - on the dash then the system is confused and needs resetting at main dealer or an indi with decent diagnostic tools

Did you fit own pad sensor wires?

Thanx Rob.
Which sensor wires do you mean?

The sensors are original BMW if that's your question with a typo...?

 

Yes was typo, stupid phone predicted text

You have still confused the system and I don't of any other way to reset it other than decent diagnostic software/ machine

I reset them all the time in work using a snap on tool

 

Had BMW in Denmark attach an original computer and they were UNABLE to reset the brake pad wear thing.....

The mechanic said the car must have some kind of electrical fault.
The were also unable to reset my service indicator (due to the car computer saying the oil level sensor is broken(it has been replaced))

BMWs computer could read these faults:

0040A4 DDE: Exhaust-gas recirculation contoller, position, long-term drift
0041F1 DDE: Electric fan, activation
0041F2 DDE: Electric fan, activation
004329 DDE: Cooling-air-flap system
0049F2 DDE: Message (speed. 0xCE)
004B22 DDE: Electric fan
004B37 BSD, message; oil condition sensor: Missing
005DE1 DSC: Brake-pad wear: plausibility, rear axle

My brake problems started when I drove into a hole on a road, and it instantly came up with the red car on ramp. This was about a year ago, and I've spent a lot of money on garage hours having brake pad sensors replaced and computers attached.
This time with original sensors and an original BMW tester/computer, it didn't work...
Both my front and rear sensors says "------" in the ODB.

And as written earlier, the BMW mechanic said that now it could only be due to some electrical fault on the car....

Does anybody have an idea of where to start the search?

 

Does anybody have an idea of where to start the search?

:?

 

Looks like a module fault to me but which one I don't know.