2005 Mercedes-Benz CL65 AMG Long-Term Road Test

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2005 Mercedes-Benz CL65 AMG: It Won't Start, Part 2

January 31, 2014

2005 Mercedes-Benz CL65 AMG

We towed our 2005 Mercedes-Benz CL65 to Fletcher Jones Mercedes-Benz in Newport Beach after it left us stranded. "I called to tell you that we received your car," started our advisor. "I walked up to check it out and the car fired right up. There was a stored misfire fault code, but no check engine light." We discussed our potential next steps...

There weren't many options. We decided to leave the car overnight to see if the dealer could get it to fail again. No luck. This will have to be something we monitor. Maybe it will never happen again. Wishful thinking is okay, right? While the CL65 was in for this service, we also asked to have an unusual dashboard clicking noise investigated.

http://youtu.be/8XwWSpo-MPc

The noise happens while the car is on and right after it goes off. Our dealer tied this chirp to the aspirator motor behind the air conditioning push-button display. "It sounds like the fan inside is starting to go out. It could still last a long time, though," our advisor explained. He added, "The part alone is $1,018. We can't replace the motor only. The whole push-button display has to come out with it. With labor your total is $1,275. If you'd like to have the work done, give me a call."

That idea to turn up the radio and drown out the noise sounds much more cost effective now. I think we'll do that for awhile.

Mike Schmidt, Vehicle Testing Manager @ 60,035 miles

Comments

  • gslippy gslippy Posts:

    Engineered like no other car in the world.

  • gslippy gslippy Posts:

    Engineered like no other car in the world.

  • duck87 duck87 Posts:

    Well... it can only be fuel or spark right? I don't get the misfire code though, I wouldn't expect that as a startup code, more like something that happened during your test. The blower motor replacement is even more hilarious- in my car it involves removal of a lower dash panel, a screwdriver and a $40 part...

  • duck87 duck87 Posts:

    Well... it can only be fuel or spark right? I don't get the misfire code though, I wouldn't expect that as a startup code, more like something that happened during your test. The blower motor replacement is even more hilarious- in my car it involves removal of a lower dash panel, a screwdriver and a $40 part...

  • mercedesfan mercedesfan Posts:

    I still think it is probably a bad ignition coil. You should grab a simple multimeter and take some resistance measurements to check for sure. The coils are known to be a problem on the W220 and W215 cars equipped with V12s.

  • mercedesfan mercedesfan Posts:

    I still think it is probably a bad ignition coil. You should grab a simple multimeter and take some resistance measurements to check for sure. The coils are known to be a problem on the W220 and W215 cars equipped with V12s.

  • mdm080333 mdm080333 Posts:

    Remove and replace. Rinse and repeat.

  • mdm080333 mdm080333 Posts:

    Remove and replace. Rinse and repeat.

  • kevm14 kevm14 Posts:

    Yeah probably something to do with all the heat generated during performance testing.

  • kevm14 kevm14 Posts:

    Yeah probably something to do with all the heat generated during performance testing.

  • fordson1 fordson1 Posts:

    I dunno, mercedesfan. One bad coil - or maybe a couple - and a V12 won't even start - ? Just thinking a bit here, but too lazy to do any research...what flavor of VVT does this thing have - ? Does it have VVT? Is it possible that maybe after the test runs (really fishing here...) with the car heat-soaking, the oil pressure to the VVT maybe was out of spec in such a way that all the valves were allowed to be open at once? Member kevm14 speculated that it sounded like no compression...and I'm not sure I disagree with him. As I said, don't know what this car's VVT setup is.

  • fordson1 fordson1 Posts:

    I dunno, mercedesfan. One bad coil - or maybe a couple - and a V12 won't even start - ? Just thinking a bit here, but too lazy to do any research...what flavor of VVT does this thing have - ? Does it have VVT? Is it possible that maybe after the test runs (really fishing here...) with the car heat-soaking, the oil pressure to the VVT maybe was out of spec in such a way that all the valves were allowed to be open at once? Member kevm14 speculated that it sounded like no compression...and I'm not sure I disagree with him. As I said, don't know what this car's VVT setup is.

  • reminder reminder Posts:

    Pouring money down a rat hole.

  • reminder reminder Posts:

    Pouring money down a rat hole.

  • kevm14 kevm14 Posts:

    I changed my mind on that. I forgot about how smooth V12 engines crank. The blips in speed were speedUPS not slow downs (as would be from compression). I think it's ignition-related (coil, crank position, etc.) exacerbated from heat soak. I say that while knowing zero about this engine.

  • kevm14 kevm14 Posts:

    I changed my mind on that. I forgot about how smooth V12 engines crank. The blips in speed were speedUPS not slow downs (as would be from compression). I think it's ignition-related (coil, crank position, etc.) exacerbated from heat soak. I say that while knowing zero about this engine.

  • The best part is, it's only 60k miles, there more fun to come!

  • The best part is, it's only 60k miles, there more fun to come!

  • kevm14 kevm14 Posts:

    This is why cars like this have so few miles. And I'm not even joking. If this thing had like 150k, I think I'd honestly have trusted it more.

  • kevm14 kevm14 Posts:

    This is why cars like this have so few miles. And I'm not even joking. If this thing had like 150k, I think I'd honestly have trusted it more.

  • sharpend sharpend Posts:

    Sell the f**ker fast.

  • sharpend sharpend Posts:

    Sell the f**ker fast.

  • agentorange agentorange Posts:

    Yeah, maybe now we know why the miles are low and it was on a used car lot. I reckon you guys either heat soaked it into some kind of fuel vapor lock and/or the fuel pump is weak. As for the coils, Jeremy Clarkson bought one of these for a song on their show and it blew something pricey in the ignition within a week. @duck87. I think the piece making the noise in the cabin is a device that circulates air over a temperature sensor. My Jag has one and it also makes a stupid noise.

  • agentorange agentorange Posts:

    Yeah, maybe now we know why the miles are low and it was on a used car lot. I reckon you guys either heat soaked it into some kind of fuel vapor lock and/or the fuel pump is weak. As for the coils, Jeremy Clarkson bought one of these for a song on their show and it blew something pricey in the ignition within a week. @duck87. I think the piece making the noise in the cabin is a device that circulates air over a temperature sensor. My Jag has one and it also makes a stupid noise.

  • mieden mieden Posts:

    This car has no VVT, coil packs are designed and sold as a bank (left bank, right bank...port and starboard side, lol). This is most probably a heat soak issue in a coil pack or CKP, although, when crank signal is failing on these cars EIS usually runs the full cranking procedure. Could also be a bad SAM right, but you better hope its not. AAC pushbutton modules (aspirator motor) are half that price online and you could install it yourselves, but it would still have to be coded to the car. They can still last a good long while after they get noisy, but the data from this temp sensor is averaged with another temp sensor/aspirator assembly in the roof and the accuracy is reduced the longer you wait to replace. Eventually you'll have to abandon the automatic functions. The good news is, at least its an aspirator motor and not a stepper motor on the HVAC box!

  • mieden mieden Posts:

    This car has no VVT, coil packs are designed and sold as a bank (left bank, right bank...port and starboard side, lol). This is most probably a heat soak issue in a coil pack or CKP, although, when crank signal is failing on these cars EIS usually runs the full cranking procedure. Could also be a bad SAM right, but you better hope its not. AAC pushbutton modules (aspirator motor) are half that price online and you could install it yourselves, but it would still have to be coded to the car. They can still last a good long while after they get noisy, but the data from this temp sensor is averaged with another temp sensor/aspirator assembly in the roof and the accuracy is reduced the longer you wait to replace. Eventually you'll have to abandon the automatic functions. The good news is, at least its an aspirator motor and not a stepper motor on the HVAC box!

  • Edmunds needs mieden on speed dial.

  • Edmunds needs mieden on speed dial.

  • noburgers noburgers Posts:

    again, what's with the deletion of all the blog comments? this entry had dozens up until yesterday

  • noburgers noburgers Posts:

    again, what's with the deletion of all the blog comments? this entry had dozens up until yesterday

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