A/C is blowing hot air
Senior Member
Joined: Jul 2007
Posts: 421
Likes: 14
From: Bay Area
2004 E500 CLK320
There's a low pressure valve under the hood. You can buy a pressure gauge from any auto store for under $10 and measure the freon pressure with the engine and AC running. If freon is low, there's a leak, which is usually caused by a leaky o-ring gasket. A good indy shop can find the leak, fix it and recharge for under $200.
Senior Member
Joined: Oct 2009
Posts: 384
Likes: 0
From: DMV
W209 500
You can troubleshoot it from your steering wheel. check this out.
http://www.marcusfitzhugh.com/CLK/DIY/acdiag.html
I have a different problem. I drive the car, turn a/c on, no air or very lil air comes out, drive a lil more (maybe couple mins), cold a/c comes and stay on.
I turn a/c off, turn it back on, same delay occur except there will be cold air come out at the beginning, then air stops, drive a lil, a/c works like a champ again.
wtf is gong on???
http://www.marcusfitzhugh.com/CLK/DIY/acdiag.html
I have a different problem. I drive the car, turn a/c on, no air or very lil air comes out, drive a lil more (maybe couple mins), cold a/c comes and stay on.
I turn a/c off, turn it back on, same delay occur except there will be cold air come out at the beginning, then air stops, drive a lil, a/c works like a champ again.
wtf is gong on???
Senior Member
Joined: Jul 2007
Posts: 421
Likes: 14
From: Bay Area
2004 E500 CLK320
Attachment 185685
Is that it? I opened the engine cover and did not find any cap that is about 1cm in diameter, but what I circled in the picture is the closest thing.
Is that it? I opened the engine cover and did not find any cap that is about 1cm in diameter, but what I circled in the picture is the closest thing.
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Senior Member
Joined: Jul 2007
Posts: 421
Likes: 14
From: Bay Area
2004 E500 CLK320
You can troubleshoot it from your steering wheel. check this out.
http://www.marcusfitzhugh.com/CLK/DIY/acdiag.html
I have a different problem. I drive the car, turn a/c on, no air or very lil air comes out, drive a lil more (maybe couple mins), cold a/c comes and stay on.
I turn a/c off, turn it back on, same delay occur except there will be cold air come out at the beginning, then air stops, drive a lil, a/c works like a champ again.
wtf is gong on???
http://www.marcusfitzhugh.com/CLK/DIY/acdiag.html
I have a different problem. I drive the car, turn a/c on, no air or very lil air comes out, drive a lil more (maybe couple mins), cold a/c comes and stay on.
I turn a/c off, turn it back on, same delay occur except there will be cold air come out at the beginning, then air stops, drive a lil, a/c works like a champ again.
wtf is gong on???
https://mbworld.org/forums/e-class-w...e-control.html
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Thread Starter
Member
Joined: Mar 2008
Posts: 95
Likes: 0
From: Dyker Heights, New York
2004 CLK 500
thanks man! yeah i saw the high pressure one on the passenger side next to the engine.. def diff size. I'll try everything out this weekend. Hopefully that will fix the problem!
Senior Member
Joined: Jul 2007
Posts: 421
Likes: 14
From: Bay Area
2004 E500 CLK320
Cool! Hopefully that fixes the problem. If the A/C air gets warm again in the future, there's probably a slow leak thru one of the valves/connections. An indy shop can typically fix the leak for under $200.
Senior Member
Joined: Oct 2009
Posts: 384
Likes: 0
From: DMV
W209 500
That sounds like the blower motor resistor is on its way out. A common problem in MBs and BMWs. It's a $170 part online, go to www.autohausaz.com to search for this part for your model. The motor resistor is located under the glove box (passenger side). Here's the link to DIY for the E class W211. The procedure is pretty much the same for all modern MBs. You're replacing the motor resistor and not the fan. This resistor is located right next to the blower fan.
https://mbworld.org/forums/e-class-w...e-control.html
https://mbworld.org/forums/e-class-w...e-control.html
Newbie
Joined: Jan 2013
Posts: 4
Likes: 0
From: Austin, TX
CLK320
My CLK320 Year 2000 with only 70K Miles is blowing warm air, dealer diagnostic reveals leaks and suggests replacing the two hoses : A/C Hose Receiver/Drier to Expansion Valve and A/C Hose Condenser to Drier and the Drier itlsef. Other parts are Sealed-Kits are not mentioned. Is it not too difficult to replace by a handy amateur ? Dealer wants to charge almost $1K for labor which I don't know if that is reasonable or not.
Any instruction is greatly appreciated.
Any instruction is greatly appreciated.
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
If you have the equipment and tools to work on the A/C system, then you can DIY, but if not, I'd find a good indy to do the work - their labor rates and overhead charges are generally less than the dealer.
