First and foremost I'd like to thank Rob Schoen of NeedsWings for the repair of SKREEM with two new keys. My 2006 Crossfire had been sitting for a long time. Almost one full year. It was a bit difficult to get her running. Sitting for a long time is not good as it can create additional problems. The lights are still on which are the ABS, BAS/ESP and CHECK ENGINE. My personal Mechanic, Kevin believes it is the PCM. Everything else has been replaced from the Crank Shaft Sensors, Wheel Sensors, CAM Sensors, Relay Module, and more . . . So its got to be the PCM Any advice for me on the PCM other than what I looked up on the web. According to the PCM troubleshooting info I read, all of the symptoms the Crossfire is having points to that PCM. Coding all over the place. I will say my mechanic asked me to go to Mercedes or Chrysler Dealer to perform further diagnosis. Mercedes no longer has software for the CF and Chrysler Dealer did do a diagnosis and told me it would cost an extra $500 to diagnose and confirm it is a bad PCM. No way. Unless I absolutely have to. Or return to another technician I used recently. The car is operating but lights are still on and will not pass inspection in July if the lights are on. Any further advice would be awesome. This forum has been a great HELP to me and my V6- 6 speed Crossfire. Thank you this much

 

Sounds more like RCM than PCM.

 

See what error codes have been set, the check engine light says there are some, save your time and money and get them read and come back here with the codes. Anyone can guess.

 

And the BAS / ESP light can usually be put out by starting the car and turning the steering wheel all of the way to the left, all of the way to the right and back to center. Turn the engine off and start it again. The light should be off.

 

There are several scan tools for under $250 that can scan both the OBD II codes and the Mercedes Codes. Your car will scan as a 2003 Mercedes SLK 320 if it is a Limited model Crossfire or an 2003 SLK 32 AMG if it is a SRT6. Your mechanic should have a scanner that will do the job. Guessing and tossing parts at it is not very productive. Please get the specific code numbers, not some wordy explanation from a mechanic. Scan the car as a Mercedes and we can go from there. Often those lights will remain on even when the problem has been repaired until the codes have been cleared from memory. That is why you must scan the car as a Mercedes and get into those specific codes.
Also the Service manual is available here on this website as a free download just click the red link at the bottom on onehundred80 post above.

 

Wait ...
"Coding all over the place."
Did your mechanic friend scan for the codes and thusly said PCM as it was coding all over the place?
But then didnt clear the codes or turn off the CEL- check engine light.
Or it was cleared and came back?

If the former, clear the codes and light.
See if they come back on after running/driving.
If so note the numbers and let members know which codes.
Cheers


Oh yeah, since cars running just go to an auto parts store to get the codes read... then codes cleared. etc.

 

That will not work in this problem. Most auto parts stores can only read OBD II codes, they do not have the scanner necessary to get into the Mercedes specific codes. The root problems which are causing the ABS and ESP lights to go on will come from TCM, CAB and related systems/parts. Those codes must be read and cleared by a scanner which reads Mercedes codes. For some codes there is a specific sequence which must be followed to clear the codes. Simply hitting the clear button on a scanner will not do the trick.

 

My first idea is the brake switch, and the second idea is the RCM traction control relay - no big deal either way. Does the speed control work?

 

But CEL is OBD2... I never mentioned ABS ETC.

So you can get those codes checked...
and what they are.
Post them here.

 

So you get the OBD II codes checked at Auto Zone and the code P0500 comes up; Vehicle speed sensor "A" circuit. You are not sure what that means so you replace all the wheel speed sensors (which from post number 1 have been replaced). You clear the P0500 code, start the car but the ESP and ABS light are still on. You figure maybe a drive cycle will clear the lights so you back out of the garage and the CEL comes right back on. What have you accomplished? The CEL comes right back on because the under lying Mercedes codes have given the PCM through the CAB information that there is a problem and the PCM turns the CEL on. You did spend $200 on wheel speed sensors and all the warning lights are still light. If you had gotten into the Mercedes codes you would have know only the rear speed sensors were giving erratic signals. By getting the correct codes you would have saved time and money. However the warning lights would still be on. The C1121 and C1123 codes are still in memory and will set the warning lights even though you have new wheel speed sensors on the rear. The car will reset those lights by itself, but you have to go through many drive cycles and some 3,000 miles for that to happen, so it just makes sense to clear the Mercedes codes with a decent scan tool before you back out of the garage and take it for a test drive.
From the information in post #1 there seems little sense in re-scanning for OBD II codes. Mercedes codes will also tell if there is a problem with the brake light switch or the multi function switch. You really need to get into the Mercedes codes, clear everything, take a test drive and then re-scan. At this point from the info in post #1 it is the only way to go. I hope Carol is reading every thing in this thread.

 

Yeah, be kinda nice to know and share what are the codes coding all over the place were, but thats just diagnostic troubleshooting. no worries...everyone has a MB code reader even your mechanic friend, right?
Was it a wheel sensor or cam crank etc.
No worries Someone said p0500 so that is good enough....go with that.

Did you try lock to lock as mentioned?
Cheers

 

The manufactures/Mercedes code for a non initialized steering angle sensor is C1174.

 

Turning the wheel doesn't work anymore. But it used to work. LoL Thanks just the same

 

Oh Yes, I hear all of the responses to my inquiry Loud and clear and some of what you are saying is the same language my mechanic says. He also let me know that he doesn't have the proper tools to diagnosis further and reset/clear. That's when He recommended I take it to Chrysler. I did. I believe Chrysler does know what the issue is. When I reported back to my mechanic, Kevin. Kevin got angry because they put a new battery in my Crossfire and it didn't need a new battery. Now see, this is why I and my mechanic don't like Dealerships. They are full of S **T!!!! I did go to a European garage and they told me they would need to dig deeper. They were honest and very good. With that said, I will take it back to the European garage so they can further diagnose, along with the information from Crossfire Forum. Yes, my mechanic wrote down all of the codes which are C1174, 1178, 1172, 1035, C1130, P20CC, P2023, U3FOO He doesn't have the ability to reset it. I'm sorry if I'm not making sense to you guys. I'm not a mechanic and do not speak your language. But I'm learning and understanding better. Tags expire July 21st. At that time, I'll need to park her again or drive with caution and hope the Po Po doesn't read the Expired tags and stops me. LoL I'll report back after the visit to the European Garage. Cheerios!!

 

The majority of those codes point to a bad O2 sensor

 

Carol. code C 1130 is a fault with the rear right speed sensor; check the voltage at the chassis connector going to the right rear speed sensor. Your mechanic can separate the connector from the speed sensor and the wiring running forward to the CAB right there in the rear wheel well. Check to see if there is 12 volts going to the sensor. If the 12v volts is there then you have a problem with that speed sensor. when you reconnect make sure it is fully seated. there are two tension spots and the second is fully seated.
The codes C1174, C1172 and C1035 all relate to the steering angle sensor.. It is located on/in the steering column behind the center of the steering wheel. That could cause the problems lighting the ABS/ ESP warning lights. You said turning the steering wheel use to reset the light, but it doesn't any more thus steering angle sensor problem.

 

Listen to zip439, not me. He is way smarter than me