I have a 2005 Roadster base model. Today I was returning from the grocery store and the car stalled in front of my house. I'm unable to restart it. Anyone know what might be the issue? First problem I've had since I purchased it. I've only put 6,000 miles on it and it currently has 46,000 on the odometer.

 

If the engine is turning with the starter, but not firing, then replace the Crankshaft Position Sensor with a Bosch replacement.
If you are turning the key, dash lights up, but no starter, then resolder the Relay Control Module ( Mystery No Start ).

 

Where is the RCM?

 

I found the RCM. It looks like the solder is good. I don't see any bad spots. The car has all the indications on the dash when I try to start it. I know the starter is working. It just won't turn over.

 

Well, Ala_xfire TRIED to help you....

If the car won't turn over, then the starter is NOT working. The starter turns the car over to get it started.
I have heard people say "it wont turn over" when they REALLY mean, "it turns over, but won't start."

I have NO IDEA what you are experiencing after that last post.

Is the engine turning over when you turn the key or not?



Please know that, no matter which it is - both of these complaint are VERY common and not usually all that hard to expensive to fix.
We just need a clear indication from you as to what is happening.

 

Pizzaguy,
I do appreciate you helping me so let's make sure we are on the same page. The engine rolls when I attempt to start it. After I removed the RCM and checked the solder, it looked brand new. I reinstalled the RCM without doing anything to it and the car started up fine. I read some issues about the crankshaft position sensor. I'm not sure by removing the RCM and then reinstalling it shows what the issue might be.

 

I had a connector on the RCM that was popping out a tad every now and then. I had to push it down occasionally and it was fine. Thinking about it, I haven't done it in a while... hm.

 

The fact that molesting the RCM seemed to make the car start makes me wonder (as josh said) about the connectors and solder on the RCM. It is not PROOF, but it is a possibility.

The Crank Sensor is such a common problem, I'd order one NOW. Get a BOSCH part, not some damn cheapy. The part number is mentioned in a lot of threads here.
I even carry a CPS in the trunk just because they are notorious for failing.

Back to the RCM. If the fuel relay or it's feed fails, the pump fails and the car won't run. If the engine control relay output fails, the car won't crank at all. There are just so many possibilities. REALLY LOOK OVER the joints on the RCM (again, many posts here with pictures about this.)

 

I thought mine was bad so I ordered two, one to go on the engine and one to go in the trunk. Come to find out it was a build related problem and now I have an extra lol.

OP if you need a bosch CPS, let me know.



Agreed, mine looked fine but I went over it anyway. Now all of the joints are twice the height they used to be lol.

 

I had the same occur on my 2004... the Crank/Cam Sensor solved the problem...Carl

 

Where can I get a new Bosche CPS from? Any reputable places?

 

Put a soldering iron to the points on the RCM first. Use a magnification lense because the naked eye sometimes doesn't catch the issue !!!

 

Listen to Sparkie first, if that doesn't do it (or to order one just in case like I did)

German Auto Supply:

https://www.germanautosupply.com/sto...sensor-82.html

Bosch #: 0 261 210 170
MB OE #: 003 153 27 28

Their price hasn't changed since I got mine in 2011.

 

Thanks for the information. You guys rock.

 

When it comes to parts like that, always remember you drive about a 2002 SLK320.

(Don't take that TOO literally, but much of the car is recycled SLK320 stuff....)

 

Gotcha, thanks for the info.

 

And if it isn't then ask the forum what the hell the old owner changed LOL.

 

Yea, quite a few Crossfires out there now with engines and transmissions from other MB cars!

 

Mark: You sure know a lot of stuff...you got my vote!!Carl

 

My real specialty is 'women'.

You were not around here for the whole "Hope" thing.

(And it has nothing to do with Obama .... but I WAS left with change.)