DittyW210

Hello,
I have a 1998 E320 4Matic with an AC problem. The system must have developed a leak because the r124 is low according to the diagnostics. Initially, i noticed that something might have been wrong because the air was warmer of one side of the cabin than the other when the AC was on. The system also hisses horribly when turned on and it has been getting worse, which seems to me that it is loosing more and more. However, the EC light still has not come on permanently. I have put it on to prevent compressor damage but other than that no warnings or leaks pouring down onto the driveway. What is wrong with my system? Has a sensor gone wrong along with a leak somewhere?

Sensor Information
#1 - 24
#2 - 13
#3 - 69
#4 - 63
#5 - 26
#6 - 86
#7 - 04
#8 - 25

Error Codes
B1 226
B1 228
B1 229
B1 230
B1 232
B1 233
B1 234

Plutoe

Forget about all the faulty sensors---look at 7 and 8---both way to low, you are either full of refrigerant and the compressor can't make pressure or you are way low on refrigerant and the compressor can't make pressure.

I suspect the latter due to the hissing-----take the care to an AC shop for a leak test and a refill, however before doing that, clear the codes and then once you have resolved the refrigerant quantity issue do another fault test to make sure all your sensors are working properly. Good Luck

DittyW210

Okay. I called my local dealer and they said $250. My local Chrysler dealer down the street will take care of it for 174.99, which i think should be fine since the system of this car should be similar to certain Chrysler ones (that whole Daimler-chrysler thing). As far as the compressor, i think you are right because the pressure goes up from 03 to 04. I'll have it tested and report back.

ps. my local Amoco refused to even look at it because it was a Mercedes

Plutoe

Wow is that pricey. Well the good news is you did not get snowed by the bobel heads saying I can do that.

Well that aint good news, if full and the compressor can't make pressure----you want to hear full and makes pressure(15)

FlatlineEF9

Find a local indy merc mechanic. My mechanic here in hawaii charges 50 dollars for a AC recharge and 30 for a leak test. I had to replace my condenser recently.

Plutoe

wow thats a deal, but who needs AC in Hawaii. We read that the temps never get above 75 F in Hawaii-----so much for the BS--Happy Thanksgiving

FlatlineEF9

LOL Its around 75 every night....and usually mid to high 80s during the day year round.