[Newe90er]

Hi, my car got some issues with abs sensors recently out of nowhere both rear failed. I have now replaced both and instead of getting the missing speed signal while driving i now have the errors at all times and neither protool or BimmerLink are able to clear the errors which they were used to prior to replacing the sensors.. any guesses from you guys? Or should i just leave it to the dealer

[eljay]

Could it be failed reluctor rings instead? Did you check the condition of those when replacing the sensors?

[whyzee125]

Did you use ATE sensors? Lots of people have this problem with aftermarket ones.

[Newe90er]

Originally Posted by eljay

Could it be failed reluctor rings instead? Did you check the condition of those when replacing the sensors?

Yeah i took a peak inside and it looked normal

[Newe90er]

Originally Posted by whyzee125

Did you use ATE sensors? Lots of people have this problem with aftermarket ones.

What is ATE? I used aftermarket part but from a reputable company and the quality is known to be good

[whyzee125]

Originally Posted by Newe90er

What is ATE? I used aftermarket part but from a reputable company and the quality is known to be good

That's the problem. ATE is the company that makes the OEM sensors and any other brand will throw codes.

[Newe90er]

Originally Posted by whyzee125

That's the problem. ATE is the company that makes the OEM sensors and any other brand will throw codes.

Really? Didnt know that, i just did a run with live values and both the sensors i just replaced stated 0.0 speed. But previous sensors were oem and they had the same codes

[gbalthrop]

Originally Posted by whyzee125

That's the problem. ATE is the company that makes the OEM sensors and any other brand will throw codes.

REALLY???!!!

Originally Posted by Newe90er

Really? Didnt know that, i just did a run with live values and both the sensors i just replaced stated 0.0 speed. But previous sensors were oem and they had the same codes

Bosch is OE / OEM supplier according to ECS & FCP:
https://www.ecstuning.com/BMW-E91-32...h/34526870076/
https://www.fcpeuro.com/Parts/?keywords=34526870076

Have you checked the wiring/ connectors?
Have you examined the ends of the original Sensors for abrasion?
Does your Live Data show rotation/ speed for FRONT sensors?
Have you checked part#? X-drive part# & RWD part# DIFFER.
RealOEM.com says 34526870076 is YOUR Part# for 325i.


If you don't have ISTA or other wiring info to use for test purposes, please provide your Last-7 Characters of VIN.
George

[GoRomeo]

Originally Posted by Newe90er

Hi, my car got some issues with abs sensors recently out of nowhere both rear failed. I have now replaced both and instead of getting the missing speed signal while driving i now have the errors at all times and neither protool or BimmerLink are able to clear the errors which they were used to prior to replacing the sensors.. any guesses from you guys? Or should i just leave it to the dealer

Make sure you plug in the connectors well. I do show a speed signal issue with my E90 but only as shadow code. No warning light at all. I really dont see the reason to replace? 🤔

[Newe90er]

Originally Posted by GoRomeo

Make sure you plug in the connectors well. I do show a speed signal issue with my E90 but only as shadow code. No warning light at all. I really dont see the reason to replace? 🤔

I was very careful with the installation and even measured the new contacts to be 100% it fits as original did. I had to replace because it wasnt just a shadow error for me. I could barely drive the care because it would start shaking heavily when the car lost speed signal and caused issues with other stuff like dtc

[GoRomeo]

Originally Posted by Newe90er

I was very careful with the installation and even measured the new contacts to be 100% it fits as original did. I had to replace because it wasnt just a shadow error for me. I could barely drive the care because it would start shaking heavily when the car lost speed signal and caused issues with other stuff like dtc

Oh wow. Interesting. I never experienced that issue. Good to know. Are you gonna replace sensors with other brand like some people suggest?

[Newe90er]

Originally Posted by gbalthrop

Bosch is OE / OEM supplier according to ECS & FCP:
https://www.ecstuning.com/BMW-E91-32...h/34526870076/
https://www.fcpeuro.com/Parts/?keywords=34526870076

Have you checked the wiring/ connectors?
Have you examined the ends of the original Sensors for abrasion?
Does your Live Data show rotation/ speed for FRONT sensors?
Have you checked part#? X-drive part# & RWD part# DIFFER.
RealOEM.com says 34526870076 is YOUR Part# for 325i.


If you don't have ISTA or other wiring info to use for test purposes, please provide your Last-7 Characters of VIN.
George

Hi, very greatful for the input. I didnt get the bosch sensor but similar one from ridex that was supposed to fit as oem and the number on the website (autodoc) was 34526762466. I did get a quick look at the original contacts when i took them out and there was no sign of damage apart from some wear on the plastic housing for the hall sensor, i will inspect original contacts more deeply now and report back if i see anything. Yes the live data was for all 4 and the front was working perfectly while the rear stayed at 0.0. Unfortuanalty i dont have ista to check for myself but the last 7 of my vin is VE33821

[Newe90er]

Originally Posted by GoRomeo

Oh wow. Interesting. I never experienced that issue. Good to know. Are you gonna replace sensors with other brand like some people suggest?

Yeah it seems uncommon that it would have such effects on the car. I will contact the supplier and see if they have any input as to why im not getting any feedback considering that they claimed the sensors match my car. Therafter i will look for replacement and try Bosch

[gbalthrop]

Originally Posted by Newe90er

... sensor...from ridex that was supposed to fit as oem and the number on the website (autodoc) was
34526762466.
I did get a quick look at the original contacts when i took them out and there was no sign of damage apart from some wear
on the plastic housing for the hall sensor... live data was for all 4 and the front was working perfectly while the rear
stayed at 0.0... vin is VE33821

Not sure about that part# you listed. Entering your VIN-7 into RealOEM.com yields following:
https://www.realoem.com/bmw/enUS/sho...diagId=33_1230

Attached are ISTA ScreenPrints showing wiring. B3 is Rear Right & B4 Rear Left. I would test for continuity between
Wheel Speed Sensor & relevant Socket of X18303 at the dsc. Also test for short to Chassis Ground.
Please let us know what you find,
George

[Newe90er]

Originally Posted by gbalthrop

Not sure about that part# you listed. Entering your VIN-7 into RealOEM.com yields following:
https://www.realoem.com/bmw/enUS/sho...diagId=33_1230

Attached are ISTA ScreenPrints showing wiring. B3 is Rear Right & B4 Rear Left. I would test for continuity between
Wheel Speed Sensor & relevant Socket of X18303 at the dsc. Also test for short to Chassis Ground.
Please let us know what you find,
George

Thank you very much for the info, you seem to be right about the part number. Looking at the one i got and the one on the realoem it seems to differ. It says that one is for active steering and the other is not. Not sure what that refers to tho. I will check continuity tomorrow, now that you mention ground short. Recently changed rear taillights and sometimes i get short circuit fault and the light goes out.

[whyzee125]

Originally Posted by gbalthrop

REALLY???!!!


Bosch is OE / OEM supplier according to ECS & FCP:
https://www.ecstuning.com/BMW-E91-32...h/34526870076/
https://www.fcpeuro.com/Parts/?keywords=34526870076

Have you checked the wiring/ connectors?
Have you examined the ends of the original Sensors for abrasion?
Does your Live Data show rotation/ speed for FRONT sensors?
Have you checked part#? X-drive part# & RWD part# DIFFER.
RealOEM.com says 34526870076 is YOUR Part# for 325i.


If you don't have ISTA or other wiring info to use for test purposes, please provide your Last-7 Characters of VIN.
George

YES REALLY!

The factory sensors are ATE--FCP showing OEM simply means Bosch is a company that supplies OEM parts to BMW. Again, the factory sensors are ATE.

Bosch probably works just fine too, but there are tons of threads where people used random brands of sensors and immediately got codes until replacing them with factory ones. OP never said which brand he used.

Search it up if you don't believe me.

[Newe90er]

Originally Posted by whyzee125

YES REALLY!

The factory sensors are ATE—FCP showing OEM simply means Bosch is a company that supplies OEM parts to BMW. Again, the factory sensors are ATE.

Bosch probably works just fine too, but there are tons of threads where people used random brands of sensors and immediately got codes until replacing them with factory ones. OP never said which brand he used.

Search it up if you don't believe me.

Ur right i switched back to original and put spacers under and now it works perfectly. The issue was the sensors