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Ask Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3740
Experience:  15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
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I have a clk 230 kompressor 1999.. The car will start only

Customer Question

I have a clk 230 kompressor 1999..
The car will start only when cold.. When it turns on it only last for 5 mins...changed the cps already still nothing... Brought a used ecu and got the old ecu to code the vin.. Still the same issue no crank.. The mechanic put the old ecu in after it being freezing cold starts and then stops after 5 mins... Please help.... The error is no communication
Submitted: 1 year ago.
Category: Mercedes
Customer: replied 1 year ago.
When it cuts out it says defective display
Expert:  Lou P. master tech replied 1 year ago.
Hello my name is ***** ***** i will do my best to help you , i strive for EXCELLENT service and nothing less. What kind of scanner are you using ?
Customer: replied 1 year ago.
Star
Customer: replied 1 year ago.
It looks like the ecu goes into a sleep mode
Customer: replied 1 year ago.
Give no communication error
Customer: replied 1 year ago.
When the car shuts off the each won't communicate with the star system ( that is with the old ecu)
Customer: replied 1 year ago.
The new ecu no response at all
Customer: replied 1 year ago.
When the car is on the star pick up communications error
Expert:  Lou P. master tech replied 1 year ago.

Ok can you do a quick test ? And upload to me the printout ?

Customer: replied 1 year ago.
The mechanic has it.. Canbus error
Expert:  Lou P. master tech replied 1 year ago.

Ok here's what I need. I need a detailed quick test /short test to see all the control modules and their fault codes and I can help.

Expert:  Lou P. master tech replied 1 year ago.

Can bus error can mean a hundred different things.

Customer: replied 1 year ago.
When the car won't start it won't communicate to the star system.... When the car stalls the car show error defective display and the star picks errors in can bus
Expert:  Lou P. master tech replied 1 year ago.

If he does a quick test / short test and presses F8 it will expand all the control modules and show all the fault codes and then print them and upload them

Customer: replied 1 year ago.
Errors are from ecu the mechanic said
Customer: replied 1 year ago.
No communication .... The fan turns on when car dosnt start
Expert:  Lou P. master tech replied 1 year ago.

I understand what you are saying. But I cannot help without seeing the fault codes. I promise seeing the fault codes will explain a lot to me.

Customer: replied 1 year ago.
No fault codes I have because I'm not with the mechanic
Customer: replied 1 year ago.
I don't have the fault codes.... Mechanic has the computer
Expert:  Lou P. master tech replied 1 year ago.

That's ok. Get them and we can continue no worries

Expert:  Lou P. master tech replied 1 year ago.

I can help absolutely.

Customer: replied 1 year ago.
He is a Mercedes mechanic... He said the are ecu errors no communication
Customer: replied 1 year ago.
But the new ecu no response
Customer: replied 1 year ago.
He did the same thing you are saying... There is just communication error .. The Ecu not communicating to the car
Expert:  Lou P. master tech replied 1 year ago.

You keep telling me the same thing over and over. And don't say ECU. That means nothing. Our modules have specific names. Are you telling me the SCANNER cannot communicate with the car ? Or just the engine computer ?

Customer: replied 1 year ago.
Engine computer
Customer: replied 1 year ago.
Front left black box
Expert:  Lou P. master tech replied 1 year ago.

Ok. Here's what I need the quick test printout for ...... Let me explain

Expert:  Lou P. master tech replied 1 year ago.

There are 5 modules or more on the communication system ,

Expert:  Lou P. master tech replied 1 year ago.

If 4 of the modules have fault codes that all say "cannot communicate with engine computer " then most likely the engine computer is bad. If the scanner cannot talk to any module on the communication lines means that one module is failing and killing the communication. So without the printout I cannot tell or advise on what to check. But once I get the printout I know I can help you.

Customer: replied 1 year ago.
The scanner won't communicate with the Ecu when the car dies.... No communication at all..
Customer: replied 1 year ago.
When the car finally wants to start again the star system
Only gets communication error with ecu
Customer: replied 1 year ago.
why with the new ecu the same issue... Turn the key no crank and only hear the fan
Expert:  Lou P. master tech replied 1 year ago.

Ok , just you explaining to me still does not help. Is there a issue with getting me the printout ? If there is then I will have to let another expert try to help , please believe me I can help but I need To SEE the fault codes. I cannot tell you why about anything. You must understand

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