Reduced driver assistance - Lane departure warning, blind spot monitor

[0xchris]

Looking for some help, got some parts installed at a shop and the car came back with these warnings, parts installed were:

Carbon fiber steering wheel
Rexspeed 3rd break light /reverse light
Rear diffuser cover

Now i am my getting,

Does anyone know the location of those sensors?
Did some digging and someone mentioned it could have been the steering wheel/air bag connector

Any help appreciated

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[tracer bullet]

Are you able to pull the codes? It'll tell you exactly which sensor is at fault.

It might be a rear sensor and it is near or actually behind the diffuser and isn't happy about the cover. The front ones are just inside of the tow hook for my Z4 and then of course equally placed on the driver side. The rears are roughly in a similar spot and height. Not the parking distance sensors (the little circles in the bumper) but nearby. I think they're higher than the diffuser actually, but then again the Supra diffuser is pretty high too.

That's the Z4 of course but hopefully that helps. A parts diagram, if you can find one, or a service manual might show you exactly where they are to be sure. They don't have to be completely blocked, if even part of the field of view is covered (the signal is bouncing right back at them), they'll give you messages.

 

[0xchris]

Are you able to pull the codes? It'll tell you exactly which sensor is at fault.

It might be a rear sensor and it is near or actually behind the diffuser and isn't happy about the cover. The front ones are just inside of the tow hook for my Z4 and then of course equally placed on the driver side. The rears are roughly in a similar spot and height. Not the parking distance sensors (the little circles in the bumper) but nearby. I think they're higher than the diffuser actually, but then again the Supra diffuser is pretty high too.

That's the Z4 of course but hopefully that helps. A parts diagram, if you can find one, or a service manual might show you exactly where they are to be sure. They don't have to be completely blocked, if even part of the field of view is covered (the signal is bouncing right back at them), they'll give you messages.

There isn't a cel so i didn't think of scanning but I'm gonna give it a go also.

Thanks for the diagram! The shop also thinks it's the rear diffuser, i am taking it back tomorrow they want to diagnose but after seeing that diagram i am almost also sure it's gonna be the diffuser. Gonna have them remove it and go from there, thanks a lot for the info!

 

[tracer bullet]

No problem!

I'll do one better, I have a copy of a Supra manual that I found somewhere around here a while back as well.

 

[MoTeC_R]

Sounds like they didn’t fully plug in one of the steering wheel controls behind the airbag. It’s easy enough to do if they were struggling to get the airbag transferred over properly.

 

[Eastwood]

Had these before when my coilovers were installed, and a few more errors.

I resolved it myself by using Toyota ISTA.

In your case, it could be the steering angle sensor needs to be calibrated or the rear sensors were not properly aligned or maybe even not plugged in properly. I would check the sensors in the diffuser first and go from there.

 

[0xchris]

No problem!

I'll do one better, I have a copy of a Supra manual that I found somewhere around here a while back as well.

Looking at this it seems the diffuser cover I have doesn't reach around to the blind spot sensors since it's only the part that goes around the exhaust, but I will send them this diagram just incase, thanks man

 

[0xchris]

Sounds like they didn’t fully plug in one of the steering wheel controls behind the airbag. It’s easy enough to do if they were struggling to get the airbag transferred over properly.

This might be the one since it's what I've read triggers those exact warnings

 

[CobraCommander]

I had a similar issue after installing the OLM 4th brake light and the HKS BOV. The sensor malfunctions cleared after parking in a spot where the sensors wouldn't detect an obstacle, disconnected the battery for 30min, reconnected, and took a short drive but my PARK light for the e brake flashes amber constantly. All the sensors are functioning and the e brake activates properly.

The dealer wasn't able to diagnose due to the need for a software update for their equipment according to the service writer.

Your issue may be the diffuser it may just be an improperly seated connector or need for recalibration.

I'll get mine to another dealership when it's warmer and post an update on the fix. Keep us posted on your end.

 

[0xchris]

Turns out it WAS some loose connectors inside the steering wheel, thanks everyone for the help!

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