SL55/63/65/R230 AMG: Help. Heat from transmission area 09 sl 63
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SL 63 AMG
Help. Heat from transmission area 09 sl 63
Hi all
I posted this in another forum also
I purchased a 09 sl 63 Amg and when the top is down I get heat generated from the transmission area. It also warms up by the ashtray and side panels. It gets worse the faster I go
When top is closed I have no warmth coming from the area
Car has been to 2 dealers and both claim. Nothing is wrong no open insulation or anything
I am extremely uncomfortable driving with the top open and feeling heat there and in the foot well area
Again when top is closed the cabin is pressurized and no temp issues
I don't know what to do at this point
Larry
I posted this in another forum also
I purchased a 09 sl 63 Amg and when the top is down I get heat generated from the transmission area. It also warms up by the ashtray and side panels. It gets worse the faster I go
When top is closed I have no warmth coming from the area
Car has been to 2 dealers and both claim. Nothing is wrong no open insulation or anything
I am extremely uncomfortable driving with the top open and feeling heat there and in the foot well area
Again when top is closed the cabin is pressurized and no temp issues
I don't know what to do at this point
Larry
Senior Member
Joined: Mar 2012
Posts: 337
Likes: 2
JBs C63 PP( wifes car ), Mc Laren Pxx(toy), 2013 Mustang GT 5.0 ( DD ), ML 6.3 ( winter DD )...
Hi Larry,
faulty cats, can also produce alot of heat.
Aftermarket exhaust systems with race cats could cause ALOT of heat extraction where you described it.
faulty cats, can also produce alot of heat.
Aftermarket exhaust systems with race cats could cause ALOT of heat extraction where you described it.
Junior Member
Joined: Oct 2013
Posts: 49
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From: Pittsburgh
2003 sl55
same issue!
I'm having a similar issue. My sl55's floorboards get hotter than the devil's handshake. even with the a/c on max cool. although, it doesn't matter if the top is up or down. It would be nice if someone could give us a few ideas. My car is older the faulty cats could be the problem. race cats would reduce restriction( heat).
Senior Member
Joined: Mar 2012
Posts: 337
Likes: 2
JBs C63 PP( wifes car ), Mc Laren Pxx(toy), 2013 Mustang GT 5.0 ( DD ), ML 6.3 ( winter DD )...
Cats= catalytic converters
Race cats actually cause ALOT of heat as well as faulty converters,
cases with faulty cats are known, without PCM throwing any CEL codes.
Sometimes stock headers are also known to extract alot of heat.
I doubt its the transmission...
If you can, jack the car up and post a picture from underneath,directly from where you think the heat comes...all of us here will have it alot of easier to help you out!
Might even be you have a nice aftermarket exhaust system, that none of the mechs you were wont tell you ;-)
Well......we can!
Oh and when youre anyway at, pop the hood and take a picture of the headers...talking about header gaskets might went down south, too.
Race cats actually cause ALOT of heat as well as faulty converters,
cases with faulty cats are known, without PCM throwing any CEL codes.
Sometimes stock headers are also known to extract alot of heat.
I doubt its the transmission...
If you can, jack the car up and post a picture from underneath,directly from where you think the heat comes...all of us here will have it alot of easier to help you out!
Might even be you have a nice aftermarket exhaust system, that none of the mechs you were wont tell you ;-)
Well......we can!
Oh and when youre anyway at, pop the hood and take a picture of the headers...talking about header gaskets might went down south, too.
Last edited by vsix; Jan 12, 2014 at 10:05 AM.
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Joined: Dec 2004
Posts: 4,268
Likes: 253
A cat might be partially clogged. The post-cat o2 sensors should be logged to see if values are roughly equal on both sides. Also an infrared thermometer can be used to measure temps and determine if one of cats is hotter.
In addition the air injection pump should be checked for shutting off after 60-120 seconds post cold start. Failure to shut off pump will result in very hot cats.
Before you do any of the above flog your car a bit and see if temps go down on subsequent drives due to cat unclogging.
Also check ATF level and color. Check for burnt smell. It could be your transmission although a cat is more likely.
Btw, they run hot. Not viper- hot, but still the tunnel can get pretty hot.
In addition the air injection pump should be checked for shutting off after 60-120 seconds post cold start. Failure to shut off pump will result in very hot cats.
Before you do any of the above flog your car a bit and see if temps go down on subsequent drives due to cat unclogging.
Also check ATF level and color. Check for burnt smell. It could be your transmission although a cat is more likely.
Btw, they run hot. Not viper- hot, but still the tunnel can get pretty hot.
Last edited by alx; Jan 13, 2014 at 09:42 PM.
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Junior Member
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From: Pittsburgh
2003 sl55
thanks alx! I'm thinking I'll run it hard then get it on a rack. I should be able to diagnose the source. If that is just the amount of heat they build without any faulty parts? I guess i will need thinner socks!
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Member
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From: michigan
SL63
i am thinking you have a real problem.
my '09 sl63 has over 15k miles (i am the original owner) and i never had any heat issues whatsoever.
how about putting the car on a hoist and "looking" at the bottom of the vehicle with a thermal imaging camera, the type used to check a home for insulation defects?
my '09 sl63 has over 15k miles (i am the original owner) and i never had any heat issues whatsoever.
how about putting the car on a hoist and "looking" at the bottom of the vehicle with a thermal imaging camera, the type used to check a home for insulation defects?
Member
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Posts: 153
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From: michigan
SL63
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Joined: Jan 2014
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2004.7 C180 Kompressor, BMW X5, Chevrolet Camaro LT, Mercedes S, Cesna 152.
Originally Posted by larryfl1 "i am thinking you have a real problem.
my '09 sl63 has over 15k miles (i am the original owner) and i never had any heat issues whatsoever.
how about putting the car on a hoist and "looking" at the bottom of the vehicle with a thermal imaging camera, the type used to check a home for insulation
defects"?
...thermal imaging camera will tell you nothing, other than areas that are hot. What you need to use is a; LCD Digital Infrared Thermometer [$16.96 free delivery]
they give you the exact temp for anything you point the laser at. I use one to check my wheels / brakes on each 4, to see if any discs are grabbing & also an early warning of impending wheel bearing issues etc.
http://dx.com/p/1-2-lcd-digital-infr...e-black-123695
my '09 sl63 has over 15k miles (i am the original owner) and i never had any heat issues whatsoever.
how about putting the car on a hoist and "looking" at the bottom of the vehicle with a thermal imaging camera, the type used to check a home for insulation
defects"?
...thermal imaging camera will tell you nothing, other than areas that are hot. What you need to use is a; LCD Digital Infrared Thermometer [$16.96 free delivery]
they give you the exact temp for anything you point the laser at. I use one to check my wheels / brakes on each 4, to see if any discs are grabbing & also an early warning of impending wheel bearing issues etc.
http://dx.com/p/1-2-lcd-digital-infr...e-black-123695
Last edited by mercedes4ever; Feb 10, 2014 at 12:28 AM.
