How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Marty Your Own Question
Marty, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 54831
Experience:  Bosch Certified Master Technician with over 35 years experience in the automotive industry.
Type Your Mercedes Question Here...
Marty is online now

I have a 2003 sl350 r230 convertible. there is violent thump

This answer was rated:

i have a 2003 sl350 r230 convertible. there is violent thump from the rear diff when changeing up from first to second,and when changeing down from third to gets worse when the vehicle is hot. barely noticable when vehicle starts up from cold. help.
Hi Mike, my name is***** were some production problems with the early 722.9 transmissions that would cause this problem. There is a service bulletin that addresses the problem. The bulletin requires that the transmission be removed and the B1 and B3 clutch packs inspected for a faulty snap ring. The transmission adaption values should be inspected first and a re-adaption procedure should be performed prior to taking apart the transmission. I've attached the service bulletin below.Let me know if you have any questions. Please remember to rate my service as this is the only way that I can receive credit from Just Answer for helping you.Marty
Marty and other Mercedes Specialists are ready to help you