Service AWD, ABS, TC maybe transaxle?

[KrossBones]

My wife has a 2017 DJ AWD R/T with 237,000km. It has Service AWD, TC and ABS light on. ABS pulsates so I checked breaks, replace 3 out of 4 calipers as the bracket were seized and did all the brakes. Did not resolve as I thought it might. What happens is when starting to drive, ABS and TC kicks in and car drives very slow until it trips the service AWD light comes on and then it will run normal after that except no cruise, TC, AWD or TC. I have noticed while backing out of driveway there is some grinding in the rear but goes away when the Service AWD comes on. I have tried pulling TC fuse on its own and it still does it.I have tried the AWD fuse and same thing. If I pull the ABS use however it has all the same lights on also with the parking brake light on but it does not drive slow and can be driven fine. I have a OB2 scanner with ABS and SRS but the ABS option tells me the car is not equipped for ABS scanning. We have had the transaxle replaced with a used one before for tires operating at different speeds. Also noticing some inside tire wear on both sides at rear. I am not sure if this would be a sensor issue with the grinding and kind of thinking it might be the transaxle again. Just would like some feedback as last time was really expensive even for the used one. Thanks.

[2late4u]

the tires wearing on the inside is your rear upper control arms,OEM are non adjustable, i went with aftermarket adj ones and then a 4 wheel alignment,,,,sounds like she does a lot of highway miles, what about the wheel bearings could also be some of the problems, about all i got

[KrossBones]

Yes alot of highway miles, I figured the wheels would be a seperate issue, but I just wanted to include it just in case it could be tied to the main issue that I am wondering about. Thanks for the quick reply. Wheels don't seem to have any wiggle in them when car is jacked up.

Edited April 19, 2022 by KrossBones

[2late4u]

12 hours ago, KrossBones said:

Yes alot of highway miles, I figured the wheels would be a seperate issue, but I just wanted to include it just in case it could be tied to the main issue that I am wondering about. Thanks for the quick reply. Wheels don't seem to have any wiggle in them when car is jacked up.

if the wheel bearings are going bad ,that can be a cause for some of the lights and not always a wiggle that you can see , can cause your abs lights and traction control lights by each wheel going a different speed.

[John/Horace]

Checking the rear diff and front ptu oil levels are a good idea. Signs of leaks,  dark stains just below driveshaft or c/v shaft locations makes it even more important. 

 

Front ptu has no dipstick to check level. Dump and fill will tell you amount of 75w90 that was there. Full is only around 700-800 milli litres.  Rear diff has side plug for level gauge, holds around 1.3 litre I believe. Look for signs of metal in any oil dumped from transfer cases. Grinding noise could be related to brake work done,  you need to investigate more.

[dodgeit]

My 2017 DJ AWD SXT is doing the EXACT same thing right now. Did you ever find a solution?