chad3c

I recently purchased a used GS350 AWD.

After purchasing it, I replaced all of the wheel bearing hub assemblies. The rear ones were grinding, and I decided to just do all 4 at the same time.

After swapping the hub assemblies, the slip indicator light comes on when I go 55+ mph. It's usually when I push on the accelerator. It's not always on. It goes on, then turns off for a while. Sometimes when accelerating it doesn't come on at all. When the light turns on, I loose power for a few seconds but I don't hear or feel any braking.

I have tried an alignment, reset the YAW sensor, etc. The mechanic had a very expensive snap on diagnostic computer and he said everything seems to check out. The steering angle is good, acceleration looks good.

I'm thinking that either one of the hub assemblies has a slight defect that affects the ABS sensors, my VSC computer needs replacing, or YAW sensor starting to go bad.

Has anyone ever seen this? I'll be taking it to a dealer soon for diagnostics.

ibidu1

iTrader: (1)

Tire height are all the same all around? Did you swap tires have you checked the air psi on them all?

If tires are good and still you have the light I would pull out each speed sensor on each side clean them and make sure all the speed sensors are seated properly. Inspect the hole make sure they are the same distance on the pickup. Also wont hurt to clean out the electrical plugs and add some dielectric grease.

ibidu1

iTrader: (1)

The hubs you used are oem or aftermarket?

chad3c

I have two sets of tires, one for winter and one for summer. Both of them use the same OEM rims and same brand of tires with the same amount of tread, and same tire pressure in all tires. Issue happens with both sets of tires! It's a 2007 GS350! Love the car, just need this issue addressed. Lexus says $150 for the diagnosis, which I'll schedule in another week.

I used some aftermarket hub assemblies. Could the ABS sensors have a slightly different resonance with aftermarket?

I took out all of the sensors, cleaned them, and made sure they were seated properly. Taking off the hubs requires moving the holder for the abs sensor, so one of those could be slightly off center.