W202 spare fob unlocks car but wont turn ignition?

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Ulysis

New Member
Joined
Apr 17, 2012
Messages
21
Car
1999 C200 Sport
Wondered if anyone knows how to repair fob, works fine to unlock car but car won't recognise when inserted in ignition. Other fob is ok and thin emergency one turns ignition fine so guessing its that key at fault. Any help appreciated
 
Cheers!
 
Is there anyway I can repair it myself?
 
Hi,
The circuit board of these keys can be removed quite easily, I would take the circuit board out and with a magnifying glass inspect the board components and run a small soldering iron over the solder joints to eliminate any possible dry joints, or loose board components. The components are surface mounted so care will have to taken.
 
Think I will stick to using fob to open and card to start for a while, save some bucks
 

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