Thanks, I’m giving it one more try with a mechanic friend then I’ll pack it up if it doesn’t work.

 

I thought this was my problem. Car is stranded in parking lot. Took mine out and solder looked fine, though I had earlier removed the 40 watt fuse because air pump was constantly running. So I knew something was already bad.

I ordered one from Amazon next day delivery. It looks used. Put it in and same problem.

Car turns over, sounds like it is starting, but then it stops. Then lockout, disconnect battery and same thing.

I had accidently hit a curb when doing a uey, right before this happened. So a bit of a bump. Pulled into parking lot 2 blocks later and couldn't restart.

So what could this be? The crankshaft sensor? Fuel pump? Are there engine codes I could check with a reader?

 

There are nearly always engine codes if the Crossfire won't start. Download these & get back to us so we can better support your issue.

 

Put OBII scanner on it. It says their are no codes. Which is strange because engine light has been on since I removed the 40amp fuse this summer.

This is a 2005 SRT. 42k miles. It sounds like it is starting with that nice pleasant ruum, then dies. Half tank of gas in it.

Edit: another piece of info. A couple of weeks ago brother in law was driving and said a couple of times he couldn't get the key to turn. Then somehow it would, without forcing it. When I was just trying to get this going the last couple of days, it happened to me as well, couldn't turn. Wasn't sure if it was a particular set of keys, and it was before I replaced the batteries in the fobs.
Anyway, could this ignition issue of not being able to turn (which I have read about here further, with a pdf etc.) have something to do with the problem I having now where it seems to start, but then just dies?

 

Sounds like crankshaft position sensor. Experienced the same with my 07 Crossfire. My 08 appears at this point in time to be the "mystery no start" had the board
repaired and needed a new transistor relay. So far so good. The mystery not start the vehicle won't crank not a sound. All the electrical items works. The dash lights
up like a xmas tree! The only thing they could read as a code was power failure. Maybe check the SKREEM. Best of luck.

 

Hi DJ,

Also had to replace a transistor relay which was bad the circuit wasn't completing according to the tech. So far so good. Again thanks so much for your incredible
help and understanding the quirks of the Crossfire. Any ideas on TPMS the light will come on occasionally and blink for about 45 seconds then stay on for a couple
of days and go off. Was thinking when I replace the tires I would install new sensors. Would they need to be programmed or do they set themselves just with
driving the vehicle. Thanks have a great one!

 

So if I am understanding you right, the "mystery no start" (repaired by doing this RCM replacement), is the case where the engine doesn't make a sound at all. Is that correct?
I thought I read here as well that the crankshaft sensor also doesn't make a sound when trying to start, but you are saying on your 07 that it did start to make a vroom sound and then die quickly, and it was your crankshaft position sensor? Just verifying this is what you are saying. Thanks.

Edit: I am pretty sure mine is the SKREEM issue. First and second time, tries to star and shuts off, third time nothing. Disconnect battery, wait a bit, reconnect, rinse and repeat.
Only two things cause me to question this.
1. I had hit a curb two blocks before I got to the parking lot. (Didn't notice having any problem getting to the parking lot after I hit the curb.)
2. Within a few seconds of stopping the car, before getting out of the car etc., I tried to restart because I had forgotten something at home. It was on this restart where the problem happened.

So, perhaps this is a clue to what causes the SKREEM issue? Bump or immediate restart?

A third thing. I just started to have the sticky key issue. Never noticed it before brother in law had it happen to him driving my car a couple of weeks ago, and it has happened to me twice now while trying to restart. This may be a particular key fob though. Today when testing it did the two try to start then stop. Third try I couldn't turn the key. Took my other key and it turned, but with the nothing happens result.

 

My 07 crank shaft position sensor issue was sometimes, it would start then quickly die. Took them 7 tries to get it on the flatbed with starting it, before they just winched her up.
I tend to agree with you on the SKREEM problem from everything I have been reading while I was trying to figure out my "mystery no start" problem. Tighed1, I have to say, is the one to seek out and discuss what's happening with your Crossfire. He is amazing!!! Got my 08 running again with his step by step info and the MB techs
really enjoyed the pictures. Working for Mercedes Benz has been a real $$$ saver for me with my Crossfires. My 07 was a very special little car. Nothing major in 202,000 miles. I sold her for the 08 with 18,000 miles which has been a rough start but hoping that since I am now driving it everyday the bugs are on the way out.
Best of luck with your Crossfire.

 

Tigh, I just wanted to make sure that you received my RCM as I’m getting the top replaced as soon as I get the repaired module back and I can actually start the car. 😉😁

 

I would Email him direct.

 

I received the RCM today and the car started right up!

One question, does it have anything to do with the seat warmers? The lower heat quit working & I assumed that it meant a solder job to fix them.

Thanks Tigh!!

 

Seat warmers are difficult to repair
you would be better off to order a generic warming pad from EBay and wire it in

it’s a lot easier than you might think. If you’re pulling the seat to do the seat, you may also want to replace the back warmer too

 

I have a mechanic neighbor that is going to help me solder the breaks. I was very tempted to buy the dual warming & cooling pads, but, that heater feels so good on my back. 🙂

 

Tighed1,
If you're still doing the repair/rebuild on the modules and relays, please send me the details to stancliffgroup@bellsouth.net. I am having similar mystery cranking/no-cranking issues and badly need help. Cost-wise, I know you're reasonable so that's not a problem....I just hope you still do them. My SRT6 shut down once or twice in traffic, but started back up a couple months ago. Within a week or 10 days, it bagan failing to crank when hot, and when cold it would start up and die in 2-5 minutes. And then not recrank. Eventually, the Check Engine came on. The initial shut downs started about a week after I changed the stock air filters. I've double-checked the airbox connections in case I clumsily disconnected a line....but can't find anything.

I'm sorry, I don't know if it's Tigh or something else, but brother could I use your heleep. I haven't been able to reach you by forum or email yet, and I have much faith in the recommendations of our fellow XF owners here. Please send me the details and I'll have a module with relays and keys in your box in no time (and payment, too, of course).
My email is stancliffgroup@bellsouth.net.

If by chance you're not doing these fixes any longer, could you please recommend an alternative. There is so much information on the forum, and so much GOOD information, that my head is still spinning. Seems there are a lot of no cranking symptoms but no two alike.
Thank you.
Joe

 

After seeing this post, I think I'm having the same exact issue. I replaced the RCM with no luck (tries to start three times and then nothing at all). Does anyone have a pic of the SKREEM unit? I have to do everything myself right now and need to know what to order. Also, Is this also plug and play, or is there anything else I need to do to it?

 

Contact the Mercedes Swap Shop. "MSS" on line.

 

Are you still refurbishing RCM? I did a pretty s__tty job re soldering mine. Would much appreciate your services. Have read the threads you posted on mailing to you. I’m interested in buying a new RCM. Do you recommend the MB SLK 320 part number on the RCM or the OEM part number? Look forward to your reply.

 

Is this for purchase of new RCM or refurbishing the one I have?

 

For information on getting your RCM refurbished, email me at tighed1@hotmail.com

 

The SLK RCM is the one used in the Crossfire .