advans

my AC OFF button constantly stays on, even if I press it, its still a "red light" and the yellow light (or was it red as well) where "rest" is supposed to be on, it doesnt turn on. no diff.

netboy

i got the same problem 2 years ago, i got it fix under warrenty. the dealer said the pipes is loose.

raymond g-

EC stays on is a safety feature....keeps compressor off so it' s not damaged.

Not familiar with 203....any chance you have similar onboard diagnostics as we
do with W210s?

read this first....
http://www.eclassbenz.com/node/27


...diagnostics
http://www.eclassbenz.com/acdiag

advans

thanks guys! i did schedual an appointment about a 1 1/2 weeks from not for another engine oil leak. im gonna tell them the AC doesnt work as well.

KIRA

do you drive naked?

Arn560

Mine works just fine. I'm trying to figure out how to sell you guys some cold air!

buddy333

Hey Avans, thanks for posting on my thread.
I read yours and I'm interested in finding out what the dealer finds about the AC problem we're both having...

Have you taken it in yet?

I don't really have a problem with any of the indicator lights that people are talking about.
I have automatic climate control (maybe they all have them) so the AC turns on automatically... I believe I'm able to turn off the AC by pushing the button to the right.

The only thing that happened to me is, I had a high pitched wistle whenever the air is on (hot or cold, louder when cold) and then the AC stopped working.

BTW, I have a 2002 C240... and moved to TX 2 months ago...
It be HOT....

advans

ah I see, I havnt bought my car in yet. But Its schedualed for next tuesday. we'll see wth is going on.

raklert

If the AC blow strong but not cold then probably your coolant is not delivering right. Could be leakage or loose somewhere.

coin

Brought my car in for service today after looking at this thread.

The stealership detected low refrigerant. They "evacuated and recharged A/C" with FREON 10th.

They charged me $133.20. Do you guys think I was raped ?

advans

yeap. any warranty left on ur car?

coin

When I went to pick up my car, my SA had already gone home. I was really shocked to see the bill though.

My original warranty has expired but I have the extended Starmarked.

advans

hmm extended starmark warranty only limits certain things, my car is still covered under standard warranty, lets hope they pay for all this.

coin

Good luck and keep us posted

C230SportsCoupe

Update?

advans

I'll update you, I bought the car in for service yesterday, the SA called me today and said they are still working on it,

but if you check the recall list, AC OFF CONSTANTLY LIT is a recall!

will scan my service sheet once i get the car back! hopefully tomorrow, I miss it already!

C230SportsCoupe

bump, what was the fix?

C230SportsCoupe

advans,

I have an apointment on Mon for no cold air, could you update this thread with what the fix was for your problem.

timstrats21

Are there codes for a 95 C280 a/c unit? My blows cold air for a minute or two after starting the car, then blows hot air and squeels a high pitched sound. I was told it could be a temp or pressure sensor. Help!

advans

hey.

the fault was AC compressor. it jammed the code in the climatronic thing. and they measured the boost. it had about 30, they pumped it up to 40boost and replaced the AC compressor.

maryjcl

I see a lot of people here speaking of relatively frequent AC recharges. Just an fyi, but you should rarely, if ever, need to recharge a properly sealed and functioning AC system. If you do, it means you have a leak somewhere. You can continue to recharge it, but it will only get worse until you fix it as most of the system is under some degree of high pressure.

I am surprised that shops or dealers would even recharge it. Most shops, when they see cars as relatively new as these, will try to find the leak before recharging.

Just don't want to see people pissing money away on refrigerant that will soon leak out due to a fault in the system.