[EricJ]

I have a well cared for, 2012 MDX Advance with just under 50,000 miles on it. My wife recently noticed the RPM's jumping at random. It started and seemed to occur around 38-40 mph and the tach would just from say 1,500 to 2,000 rpm's. Yesterday in her 60 mile commute she said it happened 3 times, once with CC on at 60 mph? We brought into our dealer, said they have never heard of such an issue. We had a tech ride with us, but they only had time to ride in traffic for a few miles and thus could not replicate.

Today I call Acura headquarters. Note, this is my 9th Honda/Acura over the past 30 years. I was so disappointed with the customer service I received today. The person I spoke with would not provide any information on if they have seen this before. Said unless a tech witnesses this happening there is no way a diagnosis can be made? Really? I am saddened as this is not the Honda of yesterday.

Has anyone else seen this issue? Am I at the being stages of a bad transmission?

Any advice?

Thank you

 

[EricJ]

I'm thinking the same thing about moving to Lexus. I did learn a bit more last night. A friend of mine who is a mechanic, pulled the Technical Bullitens on the 2012 MDX. My dealer had told me there we None/Zero on this transmission. We found I think 8 with the transmission. Many of them are for clutch slippage, TC, and bad solenoid values which the transmission has many, like 8-9 that control and monitor pressure. When I left his shop the MDX finally did for me what my wife has described. It happened at ~45 mph while accelerating and felt like a missed shift. Possible 4-5, so the tech revs up, and then it finally shifted. Its all very quick, but definitely something is not right.

 

[EricJ]

I wanted to provide a follow up: Took the MDX back to the dealer. I drove and had their lead tech drive the car. Weather was not ideal (rain & lots of noise) and we were not able to reproduce the issues my wife has seen. The tech suggested maybe we do a BG Flush & Fill (total volume). I agreed it was worth a try as another dealer had done the "Transmission Service" at 30,000 miles which only changes 4 quarts. We'll see what my wife finds in her commutes next week, but in a 25 mile drive home from the dealer, the transmission felt silky smooth.