C5 Starting Problem
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 17
Likes: 0
From: Plano TX
C5 Starting Problem
I am having a random issue with starting my C5. About a year ago, it started acting up - just once in a while when you turn the key to start - nothing happens. Try it again from 1 to maybe 20 times and presto, it starts. Finally, about a month ago, it just wouldn't start at all, no matter how many times I tried. Dealer said I had a bad ignition switch (the part where the key goes in) and replaced it and all was good. A month later, and I'm having the intermittent issue with nothing happening when I turn the key to the start position. Dealer had the car for a week and it wouldn't fail for them... of course.
Any ideas?????
Any ideas?????
Race Director
Joined: May 2012
Posts: 15,752
Likes: 3,267
From: Phoenix area, AZ
It's possible the key itself might need to be replaced. If you have another key try using it for a while. The transponder in the key can become worn over time and will not register with the security system. I had the same problem myself until I switched to my backup key.
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 17
Likes: 0
From: Plano TX
C5 starting issue
Pretty sure it's not the pellet - I have 3 keys, including the new one the dealer gave me when he replaced the ignition switch. However, the code pull did find something interesting...
58 SDM B0090 H
From what I've read, this is the air bag control module, and indicates the active switch voltage is out of range. I'm pretty sure this problem only started occurring when I disabled the passenger air bag. The simple fix may be to just enable the air bag - think I'll wait till it acts up again and try that...
As for the security light, I bought the car used and that light has never worked. But the security system does seem to work.
58 SDM B0090 H
From what I've read, this is the air bag control module, and indicates the active switch voltage is out of range. I'm pretty sure this problem only started occurring when I disabled the passenger air bag. The simple fix may be to just enable the air bag - think I'll wait till it acts up again and try that...
As for the security light, I bought the car used and that light has never worked. But the security system does seem to work.
