Originally Posted by
TDAH
Here's a picture of the failed headlight control module.
I see signs of water damage and have circled the sites of said evidence. Since you don't know history of the car, who knows what happened in the past.
No fuse blew because there is no fuse protecting the ICM, the fuses on it protect the outputs, but the inputs to ICM are:
1) A direct feed from connection from splice block 100 in the underhood fuse box, driver's side. This is fed from a heavy lead going to the 200 amp fuse in the battery fuse box, next to the battery.
2) Two separate switched leads from the ignition switch. These are also fed from splice block 100.
You can flow 199 amps all day long and now fuse will blow. At 12.5 volts, a .1 ohm short will flow only 125 amps. Thats 1500 watts - a lot of heat.
I had a mobile key programmer come by and he couldn't get in to see what the problem was. $110 down the drain...
I've been on this forum thirteen years. I have lost count how many times we've heard of someone calling one of those "mobile locksmiths", never heard of that getting them anywhere. Sounds like a cool racket, show up, be ineffective and get paid. Where do I sign up?
I don't know what to try next.
I don't either because it's hard to understand what the issue is NOW. From what I gather, I agree that it sounds like your RCM is acting up. Like it has for about 1/3 or more of all owners. We all should have a spare RCM and carry it in the trunk at all times. My Grapite's RCM failed twice in a year (first time, solder fractured on the board, second time, one of the relays failed). Mine finally failed on the SE three weeks ago, so I ordered a new one and the car is fine. I sent my old one to DJ in Arizona and he rebuilt it. I now have it in the trunk as a spare, cause RCMs fail eventually.
Order an RCM, if it fixes it, send yours to DJ. If it doesn't, at least you have a spare. If you can toss money on a "locksmith" you can throw $150 on a part you WILL need eventually, if not now.
Search for:
Mercedes 2003 SLK320 Relay Control Module (or put in SLK230, as those for some reason are $30 cheaper, that's what I bought) at FCP Euro, German Auto Parts, AutohausAZ or PartsGeek and grab any item that looks like what is below. Ignore part numbers, if it fits either of those cars, it fits.
If you go to eBay, don't come back here asking for help as you've wasted your time buying an unknown, junk part. You want a NEW part.
If you search "Chrysler Crossfire" for the part - sucks to be you.
