A/C for W220 won't blow cold - PeachParts Mercedes-Benz Forum

Jaeger · #1 08-22-2003, 10:57 AM

The A/C in my 2000 S430 provides inadequate cooling power. I have heard that the compressor and/or evaporator was enlarged in subsequent years. Is this a problem that can be repaired under warranty or via a service bulletin? Grazi in advance!

#2 08-22-2003, 03:33 PM

I am not an expert on the subject (like I am on everything else) but MB did change the system at some point during the 2000 MY production run. I think it was around the end of '99.

I have a Nov. 99 build S500 and I had the exact same problem. I took it in to the dealer for either the A or B service and just mentioned to the service advisor that the A/C sucked (I live in Dallas) and they retrofitted it. An easy way to tell is the newer system has an ACoff button whereas the original system had a different button (PWR I think - can't remember).

The system is now vastly improved and has no problems even with 100+ ambient temps that we see occasionally (all summer) down here! It involves a different evaporator and about 10 other parts, including the previously mentioned change to the control panel, per my invoice.

Randy
'94 E500
'00 S500

#3 08-22-2003, 03:45 PM

Here's a post I found on another MB board:

"I did not like the output of my A/C on my 2000 S500. Called the dealer, told him I had heard of a problem. He said any S500 built before 11/99 is eligible. Mine was built on 07/08/99. So made an appointment for next week and they are going to do the job. He said it is a big job. Push the dealer if you are eligible. If you do not get any satisfaction from them contact MBUSA directly. Usually when they get involved, matters get resolved quickly."

The PWR button I mentioned in the last post should be EC. If you have an EC button, then you have the original non-retrofitted system. If you have the ACoff button, then you have the newer system.

Bring it in and make them do it. They only had my car for a day and a half although other people said it took longer.

Randy
'94 E500
'00 S500

Jaeger · #4 08-22-2003, 04:48 PM

I'm in balmy NorCal. In Dallas it would be intolerable.

#5 08-22-2003, 04:52 PM

You are correct, sir!

I even have the rear A/C and the ventilated seats. The seats don't do much for me but the rear A/C rocks. I used to let the cold air blow up my shirt sleeve and inflate my shirt - it was the only way to stay cool!

Keep us posted!

Randy