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Fix_It_Man
Fix_It_Man, Repair Supervisor
Category: Transmissions
Satisfied Customers: 17171
Experience:  ASE Master Certified, L! Advanced Level with over 20 years of experience.
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S550 will not shift out of park into gear (2007) it was

Customer Question

s550 will not shift out of park into gear (2007)
JA: How old is the transmission? Have you checked the brake switch?
Customer: it was shipped to halifax i am going there tomorrow and the guys said will not shift so i really don't know 1st check the brake switch eh
JA: Are you fixing your S550 yourself? What have you tried so far?
Customer: nothing i am going to see it tomorrow i shipped it was fine before shipping
JA: Anything else you want the mechanic to know before I connect you?
Customer: no i don't think so
Submitted: 12 days ago.
Category: Transmissions
Expert:  Fix_It_Man replied 12 days ago.

Hello, my name is***** of the time the issue is not the brake switch, though it can be. The problem is usually voltage related. It can be a low battery or it can be an issue with the electronic shift module. This is located on the side of the transmission and is prone to failure. I would start by making sure that there is good voltage in the batteries. If there is then this shift module is more than likely the issue. If you need more help please let me know.