Malfunction issues after lowering car
11-01-21, 11:15 AM
#1
Malfunction issues after lowering car
Before I take the car to the dealer I wanted to see if anyone had seen this problem, and/or know what to take a look at as a root cause.
Nothing out of the ordinary happened. Installed some coilovers, had the car aligned and all was well for two weeks as I drove it and let the springs settle. No issues at this point. I took the car back to the shop, had them lower the rear 1/2" inch more and recheck the alignment. After this was done the issues arose. I thought they may have messed up an ABS sensor, or wiring for one, but when I pulled the rear wheels, and looked, they all were tidy and fine. It seems like the front camera is out of alignment maybe, but not sure how this happened by just lowering the rear.
Anyway, like I said, I visually checked the rear ABS sensors and they looked untouched and fine. I cleaned the in front of the camera above the rear view mirror, and cleaned all sensors in the grill/front bumper to no avail. Not really sure where to move from here, but I am hoping someone has experienced this or has and idea on where to start for a DIY diagnosis.
I'm including shots of what is showing up as faults.
Nothing out of the ordinary happened. Installed some coilovers, had the car aligned and all was well for two weeks as I drove it and let the springs settle. No issues at this point. I took the car back to the shop, had them lower the rear 1/2" inch more and recheck the alignment. After this was done the issues arose. I thought they may have messed up an ABS sensor, or wiring for one, but when I pulled the rear wheels, and looked, they all were tidy and fine. It seems like the front camera is out of alignment maybe, but not sure how this happened by just lowering the rear.
Anyway, like I said, I visually checked the rear ABS sensors and they looked untouched and fine. I cleaned the in front of the camera above the rear view mirror, and cleaned all sensors in the grill/front bumper to no avail. Not really sure where to move from here, but I am hoping someone has experienced this or has and idea on where to start for a DIY diagnosis.
I'm including shots of what is showing up as faults.
11-01-21, 08:42 PM
#2
The headlight issue is common when you lower the car. You just need to readjust them. The other errors, I have no idea.
11-01-21, 11:40 PM
#3
Intermediate
Rear Height Control Sensor
This should help you with your headlight system error. See post #8 of the thread. I wonder if the rest of your errors resolve once you adjust the rear height control sensor.
https://www.clublexus.com/forums/gs-...ng-system.html
https://www.clublexus.com/forums/gs-...ng-system.html
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NJLEXES (11-03-21)
11-02-21, 08:27 AM
#5
This should help you with your headlight system error. See post #8 of the thread. I wonder if the rest of your errors resolve once you adjust the rear height control sensor.
https://www.clublexus.com/forums/gs-...ng-system.html
https://www.clublexus.com/forums/gs-...ng-system.html
Headlight adjustment aside, would a broken ABS sensor cause all of that?
11-02-21, 09:27 AM
#6
Lexus Test Driver
Can you please post pics of the car? Just how low did you go...
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11-02-21, 12:13 PM
#8
Looks like a pain. I'll adjust the headlights manually, and see if that helps before trying that. Thanks for the link and info.
Yeah, but why though? What might have happened that would cause that from lowering the rear 1/2" more? There's plenty of these cars out there that are lower than mine, and none are having these same issues.
Headlight adjustment aside, would a broken ABS sensor cause all of that?
Yeah, but why though? What might have happened that would cause that from lowering the rear 1/2" more? There's plenty of these cars out there that are lower than mine, and none are having these same issues.
Headlight adjustment aside, would a broken ABS sensor cause all of that?
11-02-21, 12:23 PM
#9
Looks like a pain. I'll adjust the headlights manually, and see if that helps before trying that. Thanks for the link and info.
Yeah, but why though? What might have happened that would cause that from lowering the rear 1/2" more? There's plenty of these cars out there that are lower than mine, and none are having these same issues.
Headlight adjustment aside, would a broken ABS sensor cause all of that?
Yeah, but why though? What might have happened that would cause that from lowering the rear 1/2" more? There's plenty of these cars out there that are lower than mine, and none are having these same issues.
Headlight adjustment aside, would a broken ABS sensor cause all of that?
DRS is required to be functional for PCS, LKA etc to function.
Relax nothing is broken. Whoever did the lowering are clueless about these cars computer systems. Also takes 20 trips for the detection logic to trigger a malfunction, so probably the fault was already there the day you drove the car off.
Last edited by 703; 11-02-21 at 12:57 PM.
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Neil64 (11-02-21)
11-02-21, 01:14 PM
#10
It's not absurdly low or anything.
#NeverRollsStockCrew
Now that there makes sense. And now that you said that, after that final alignment, I remember the guy saying that he did not initially check the box in the system for the car having the DRS before taking it out for a spin. When he got back from the test drive he went back in and ticked the box for it. Maybe that's where, and what f'd it up. Thanks a lot for that info.
Is this something I can fix with Techstream myself or more of a dealer thing?
#NeverRollsStockCrew
nope. Not the abs Sensor. The dynamic rear steering actuator needs to be re-initialised and off Center memory re-learnt after any steering parts or rear suspension are adjusted or replaced. It’s a normal procedure. Most GS out there don’t have DRS. This is done with the wheels off the ground as the actuators need to turn.
DRS is required to be functional for PCS, LKA etc to function.
Relax nothing is broken. Whoever did the lowering are clueless about these cars computer systems. Also takes 20 trips for the detection logic to trigger a malfunction, so probably the fault was already there the day you drove the car off.
DRS is required to be functional for PCS, LKA etc to function.
Relax nothing is broken. Whoever did the lowering are clueless about these cars computer systems. Also takes 20 trips for the detection logic to trigger a malfunction, so probably the fault was already there the day you drove the car off.
Is this something I can fix with Techstream myself or more of a dealer thing?
The following 4 users liked this post by Euphoric:
11-02-21, 03:03 PM
#11
Lexus Test Driver
Yeah that's not crazy low at all. Man that looks really good actually!
11-02-21, 04:07 PM
#12
11-02-21, 10:06 PM
#13
It's not absurdly low or anything.
#NeverRollsStockCrew
Now that there makes sense. And now that you said that, after that final alignment, I remember the guy saying that he did not initially check the box in the system for the car having the DRS before taking it out for a spin. When he got back from the test drive he went back in and ticked the box for it. Maybe that's where, and what f'd it up. Thanks a lot for that info.
Is this something I can fix with Techstream myself or more of a dealer thing?
#NeverRollsStockCrew
Now that there makes sense. And now that you said that, after that final alignment, I remember the guy saying that he did not initially check the box in the system for the car having the DRS before taking it out for a spin. When he got back from the test drive he went back in and ticked the box for it. Maybe that's where, and what f'd it up. Thanks a lot for that info.
Is this something I can fix with Techstream myself or more of a dealer thing?
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