Date registered: Nov 2004
Vehicle: 2000 E320
Location: Cedar Park, Texas, U.S.A.
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
I opened the FOB case and removed a small white plastic PCB retainer (very gently!). At that point, the PCB slid right out. I visually inspected all components but could not see any loose solder joints or anything unusual. I cleaned it and put it back together but still have the same problem. I read somewhere that they keys are preset to a certain number of starts, after which they stop working (something like 80,000 starts). That seems like a lot of starts! and unlikely to be my problem, I think.
Has someone ever repaired the FOB PCB? And if so, what normally fails on the board?
I am trying everything I can before I have to cough up the big bucks for a new key, not to mention the satisfaction recognized from fixing it myself!