Why isn't the C5 II MK2 remote control syncing?
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sydo
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Why isn't the C5 II MK2 remote control syncing?
Hello everyone, I'm coding the immobilizer system of my 2007 C5 MK2. The car starts, but I've tried many different remote control models; the synchronization doesn't work, the remote control doesn't function. The original remote control worked, but now it's lost. Currently, I can only open and close the car with the key. Why is the remote control not working on my C5 MK2?
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mickthemaverick
- Forum Admin Team
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Re: Why isn't the C5 II MK2 remote control syncing?
If it is not the original key then it will need programming with the use of the original keycard. Best done at the dealer!! 
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
I used to ride on two wheels, but now I need all four!
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sydo
- Posts: 76
- Joined: 26 Apr 2024, 08:42
- x 9
Re: Why isn't the C5 II MK2 remote control syncing?
Does it only work with the original remote control, and why don't other remotes work? Many vehicles like the 407, 307, C5 MK3, etc., can be used even without the original remote control.mickthemaverick wrote: 24 Jul 2026, 19:30 If it is not the original key then it will need programming with the use of the original keycard. Best done at the dealer!!