Transmission not shifting properly

140,000 MILES • 3.2L • 6 CYL • 2WD • AUTOMATIC
Avatar
SELKIRKMAN
  • MEMBER
  • 1 POST
Transmission will not go into reverse unless i rev engine.
Jul 18, 2020 at 4:57 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

That sounds like it could be a line pressure issue, low transmission fluid, or a computer related issue.

What I suggest is to first check the transmission fluid to make sure it is clean and full. The pic below shows the dipstick ranges based on engine temperatures.

If the fluid is clean and full, the vehicle's computer will need scanned to identify diagnostic trouble codes. This is a pre-OBD2 vehicle, so you will need to find someone with a scan too that could check Mercedes codes on this year vehicle.

Let me know what you find on the fluid level.

Joe
Jul 19, 2020 at 1:08 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle