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Mercedes-Benz C-Class Care and Maintenance

181 messages,  Last post on Nov 24, 2008 at 3:49 PM

You are in the Mercedes-Benz C-Class Forum. Your Hosts are pat & karens

What is this discussion about? Mercedes-Benz C-Class, Hatchback, Sedan, Wagon


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#172 of 181
Re: C-230 K Sport Service B [kpalmer3] by jrct9454
Aug 05, 2008 (5:43 am)
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Replying to: kpalmer3 (Aug 04, 2008 6:55 am)

The services entailed with the B-service are described in one of the booklets you should have gotten with the car. Besides oil and filter, it involves the usual series of checks, and depending on time and mileage, may involve changing air filters, coolant, brake fluid, etc.
 
The fact that the light came on indicates that your independent either doesn't know how to reset the service system, or simply forgot. If it's the former, I'd be worried, since this is somebody who doesn't know enough about Mercedes to be trusted with this car; if the latter, no harm, no foul - take it back to him and tell him to reset the service indicator.
 
I used to know how to reset it on the W203, but it's been a couple of years now, and I can't remember the sequence of steps. Do an internet search on "resetting Mercedes service indicator" or "FSS" and see what comes up.
 
I must caution you - taking shortcuts on service with these cars is just asking for it - if you plan to keep the car any length of time, you need to do the services called for - again, the service descriptions should have come with the car. If not, get to a dealer parts dept and order the correct service description book for your model and year. And again, the thought keeps coming to me that your independent, if he's worth anything at all, should be able to lay hands on the complete list of servicing requirements for this car - it's long and complex, but readily available to anyone who wants to buy the CD from MBUSA. Nobody should be in the Mercedes service business who doesn't subscribe to the service descriptions and updates available from MBUSA.
 
In other words - take your questions back to the guy who serviced the car, and put them to him, including how to reset the service light.
#173 of 181
98 C230 A/C problem by lalabenz
Aug 12, 2008 (9:03 am)
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My C230 A/C only works for around 1-2 mins, then only warm air comes out from the vents. Had checked Compressor, the 134a level looks fine. One technician thought a temp sensor or humidity sensor is bad. But they have no meter to check that. Do not want to spend a lot $$$ on this, but summer is too hot!!
 
What do you think the problem might be? Do you recommend me to go to MB dealers for a $$$ expensive check?
#174 of 181
Re: 98 C230 A/C problem [lalabenz] by Mr_Shiftright HOST
Aug 12, 2008 (9:53 am)
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Replying to: lalabenz (Aug 12, 2008 9:03 am)

No you can go to any AC specialist or any shop with basic AC equipment. It's strange to me that any shop working on Mercedes (or claiming to) wouldn't have this basic equipment at hand. Not a good sign.
 
 First thing to check is refrigerant levels and pressure.
#175 of 181
Re: 98 C230 A/C problem [Mr_Shiftright] by lalabenz
Aug 15, 2008 (8:01 pm)
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Replying to: Mr_Shiftright (Aug 12, 2008 9:53 am)

Thanks, Refrigerant levels and pressure are OK, the guy checked my refrigerant pressure first with some pump. Then he went to his office and looked over his computer and told me that it was common in Benz C230, some temp sensor went wrong and the AC will work for a few mins then shut off automatically after each engine start. Not sure if I should trust him or not.
#176 of 181
Re: 98 C230 A/C problem [lalabenz] by Mr_Shiftright HOST
Aug 16, 2008 (7:58 am)
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Replying to: lalabenz (Aug 15, 2008 8:01 pm)

Not a matter of trust but he obviously doesn't want to tackle the job, so you'll have to shop around anyway. I wonder if he is referring to the ambient cabin temperature sensor, the one that tells your temperature control module that you've reached the temperature you dialed in?
#177 of 181
Re: 98 C230 A/C problem [Mr_Shiftright] by lalabenz
Aug 16, 2008 (8:32 am)
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Replying to: Mr_Shiftright (Aug 16, 2008 7:58 am)

I think he talked about the one reading temperature. But he does not have the meter to confirm the sensor is bad or not. The sensor is beside the driver gas pedal, you can find it after removing the plastic vent.
 
But I doubt it, even I set the temp to LOW, which means the compressor should work no matter how cold the inside temp is, right?
 
Do you have any CD or experience about the problem, AC works for 1~2 mins after each engine starts. Thanks a lot.
#178 of 181
Re: 98 C230 A/C problem [lalabenz] by Mr_Shiftright HOST
Aug 16, 2008 (8:52 am)
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Replying to: lalabenz (Aug 16, 2008 8:32 am)

It's all just guessing. I'd have the codes read to see if there's any hints there, otherwise an AC specialist has to figure out what is shutting the AC compressor on and off and making it cycle. Could be ambient temperature, could be pressure switch, could be compressor losing pressure, dunno.
 
There is a Technical Service Bulletin on this problem although I don't know exactly what they are talking about:
 
Notes
 
Date: December 18, 2002
 
Order No.: P-B-83.55/65
 
Supersedes:
 
Group: 83
SUBJECT:
Model 203, 211, 215, 220, 230
 
A/C Compressor Switches On Frequently
 
"If you encounter instances in the above models where the air conditioning compressor as well as the mirror heaters switch on with an increased frequency, replace the multifunction sensor for activated charcoal filter. The increased frequency of operation is a result of an incorrectly calibrated multifunction sensor sending erroneous values over the CAN bus."
#179 of 181
Re: 98 C230 A/C problem [Mr_Shiftright] by lalabenz
Aug 16, 2008 (1:53 pm)
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Replying to: Mr_Shiftright (Aug 16, 2008 8:52 am)

Thanks.
My compressor seems only switch on when start, then shut off until next start. I just released all refrigerant and put 2 can of 134a in. the problem is still there.
 
A few months ago, it has been working for two days, but after that, the AC system just work one minute for each trip. During the trip, it never switched on and off, just off.
#180 of 181
Garage remote by wendy2222
Oct 25, 2008 (9:40 am)
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Just bought a 2006 C230. Car didn't come with a manual and I am trying to program the cars garage door opener located on the rear view mirror. Could someone please just give me the steps that are needed to do this. Thanks.
#181 of 181
Re: 98 C230 A/C problem [lalabenz] by dietmaru
Nov 24, 2008 (3:49 pm)
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Replying to: lalabenz (Aug 12, 2008 9:03 am)

I had similar problem. As it turned out, the heating/cooling system had never been calibrated.

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