AWD Malfunction Warning After Low Tire

[enigma-2]

A hesitation has been reported in other forums after a software update. Seems the update is the cause.

 

BTW, before buying new tires, make certain you have identified why one tire was in such bad shape (IE tie rod, ball joint, etc.)

[w102acd]

I did a factory reset of the settings and did a software update.  This seems to have resolved the problem for the trip around the block.  Hoping it stays away!

 

Thanks for the advice of the software update and I did some other reading that the car learns the driving habits and adjusts accordingly.  We bought this from my MIL and my son was driving it.  Perhaps the car learned the habits of a grandma and had a hard time adjusting to a teenager? 

[enigma-2]

🎶 and she'll have 🎶🎶 fun, fun, fun, til daddy takes the car 🎶 away ...  ☝🤪🤟

[w102acd]

Well...the problem came back.

 

I'm going to do a transmission fluid change (3 times) to see if I can fix the issue.  I'm also going to go in and delete the transmission adaptive tables with FORScan.

 

I also figured out that one of the tires was two years older than the rest which hopefully didn't cause any of the current issues we're having.  We just got a new set of tires the other day.

 

I haven't driven it a ton since this started, but the shifting issue gets better after longer drives and completely goes away after a 15 minute highway drive and then back on surface streets.  It also shifts better if you drive more aggressively through the 25-45 mph range.  Not exactly sure what this means, but perhaps the transmission fluid is gunked up and gets more fluid as it heats up?  In which case less gunked up fluid will help.  Fingers crossed!

 

I did some more searching on the internet and it seems like the torque converter (shudder) is a common problem on these transmissions and seems to match the symptoms.