hello all before changing my solenoid I wanted to get other’s opinions I’ve been having problems with my transmission symptoms are harsh shifting and after driving the car for a while the flashing D4 light comes on I’ve been seeing Reddit posts recommending a fluid change and also checking my transmission fluid level does anyone else have any other suggestions??

Thanks guys have a blessed day

 

There are many, many threads about the transmissions in these cars. Do a search and you can read for days. Luck to you!