I'm new to these forums as I recently purchased a 2011 MR w/ 2500 miles on it. Yesterday as I'm pulling out of the garage the center display pops up with a "AWD service required" message. The g/f tells me that the ACS service message also popped up a few days ago. Both messages disappear afterwards ( I will try to see if they come up again.)The car has been driven normally commuting to work and back home and is currently sitting on 2700 miles. I did run a quick search on the topic but haven't come up with any answers on the message going away. I will be bringing it in for servicing on Saturday but if anyone has any insights on what to look for will be greatly appreciated.

Thanks!

 

Have you at least checked the fluid level in the trunk?

 

Fluid levels are normal. The error has since gone away and never reappeared. Thanks.