a/c problem
Thread Starter
Junior Member
Joined: May 2006
Posts: 62
Likes: 0
From: chicago
clk 430 cabriolet
a/c problem
I have seen a few posts about a/c problems....unfortunately mine gave out this year and was wondering if anyone can tell me what the numbers from REST button mean:
1......102
2......78
3......144
4......141
5......100
6......194
7......1
8.......85
9......0
10....0.9
20.........0
21..........8
22.........0
23......100
24.......14.1
40.........8
41........5
42......248
43......14
1......102
2......78
3......144
4......141
5......100
6......194
7......1
8.......85
9......0
10....0.9
20.........0
21..........8
22.........0
23......100
24.......14.1
40.........8
41........5
42......248
43......14
Last edited by lawrdent; Jun 27, 2007 at 08:41 PM.
Super Member
Joined: Jul 2005
Posts: 592
Likes: 1
From: Chicago
CLK/ML
You only need to worry about# 1 through 7 for the a/c
Run this test:
http://www.eclassbenz.com/node/27
Assuming you obtained those numbers with the engine and a/c turned on, I can tell you right off the bat that you are low on refrigerant. You're showing a "1". After I refilled the freon, I'm getting numbers that fluctuate between 14 & 16.
Also, your ambient temps are out of wack. I'm in Park Ridge and althogh it's been hot here....it aint' that hot. Try a new reading today now that it's cooler.
Run this test:
http://www.eclassbenz.com/node/27
Assuming you obtained those numbers with the engine and a/c turned on, I can tell you right off the bat that you are low on refrigerant. You're showing a "1". After I refilled the freon, I'm getting numbers that fluctuate between 14 & 16.
Also, your ambient temps are out of wack. I'm in Park Ridge and althogh it's been hot here....it aint' that hot. Try a new reading today now that it's cooler.
Last edited by ThrillKill; Jun 28, 2007 at 03:37 PM.
Thread Starter
Junior Member
Joined: May 2006
Posts: 62
Likes: 0
From: chicago
clk 430 cabriolet
thanks for your reply...I too live in Park Ridge.....the time I took those readings was when I was stopped at a light when the temp was like 96 in chicago and was raining so had to defrost the windows...was like a suana...anyway, I will check it out the next couple of days.
Senior Member
Joined: Aug 2003
Posts: 268
Likes: 0
From: NY/CT
CLK 320
thanks for your reply...I too live in Park Ridge.....the time I took those readings was when I was stopped at a light when the temp was like 96 in chicago and was raining so had to defrost the windows...was like a suana...anyway, I will check it out the next couple of days.
7......1
You're out of refrigerant. Probably have a leak somewhere... if it was 96° everything else seems to be fine.
I changed my evap sensor this weekend and refilled and sure enough everything was fine... sensor 7 was reading 15 bars. Then I checked that night and it was down to 9, then the following day down to 4, so I have a leak too.
Fun fun fun...
