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b5demon
b5demon, Auto Service Technician
Category: Transmissions
Satisfied Customers: 3720
Experience:  ASE and Chrysler certified master technician
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99mb ml430 while driving the tranny disengages when going

Customer Question

99mb ml430 while driving the tranny disengages when going from 3rd to 4th
JA: What year is your transmissions?
Customer: 1999
JA: Are you fixing your ML430 yourself? What have you tried so far?
Customer: changed fluid and filter
JA: How many miles are on the car? How has your mileage been lately?
Customer: 172000
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 4 months ago.
Category: Transmissions
Expert:  b5demon replied 4 months ago.

Hi Welcome to Just Answer! When you changed the fluid and filter did you find and debris in the pan? Is the check engine light on and did you have the transmission controller checked to see if there are any related codes to your transmission issue?

Customer: replied 4 months ago.
nothing in pan check engine light on how do you check controller
Expert:  b5demon replied 4 months ago.

you will need a scan tool capable of communicating with mercedes controllers. Unfortunately they are expensive and your best bet may be to take it to a mercedes dealer or a shop that specializes in european cars to have the codes checked. From what you are describing though the transmission may need to be rebuilt or replaced.

Expert:  b5demon replied 4 months ago.

If you do get the codes checked i will be happy to help you with them to try to figure out what is going on.

Customer: replied 4 months ago.
good bye
Expert:  b5demon replied 4 months ago.

let me know if you need any more help