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  #1  
Old 07-12-2015, 03:45 AM
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'98 C-class Convenience/Comfort Module Location?

Hello,

I've searched extensively and can say for sure it is not where it's supposed to be: in the trunk sitting in a channel outboard from the battery, or in the fuse box under the hood. Attached is a picture illustrating the fuse box mounting location. I don't have a picture, but can also say it's not underneath the panel on the floor in the trunk just behind the back seat either. Are there any other locations they put these across the years for the W202?

Thank you,

Rick

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'98 C-class Convenience/Comfort Module Location?-1028091152-01.jpg  
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  #2  
Old 07-12-2015, 11:48 AM
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My Bentley manual shows the module to the right of the battery under the rail and makes no mention of year. Did you pull the battery back? I know on my 97 C280 it is there, though 98 and up got a more complicated system with much of the stuff running through CAN bus.

I wonder if this module went away since each door is supposed to have a CAN module?
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  #3  
Old 07-12-2015, 03:13 PM
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What is the problem you are trying to fix?
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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  #4  
Old 07-13-2015, 01:54 AM
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I'm trying to fix a repeated failure of the front windows, sunroof, mirrors, seats, and A/C. I do have individual door modules, and have changed one of those, and experimented with pulling individual fuses to no avail. The only thing that resets everything (except A/C, which has never worked unless you jump 12V to the clutch), is to pull the battery cable or one of the large fuses at the fuse box. So I've been told, the 'Comfort Module' ties everything together. The part number for this, 202 820 092 6, is used by many different chassis for a good number of years based on what I can find on these. Honestly though, information is difficult to come by on these, and there are NO scan tools aside from the dealership's that can read them. Lots of errors in the Bentley manuals as well.
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  #5  
Old 07-15-2015, 01:00 PM
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Location: Seattle
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Post 9 of this thread has a possible clue:

http://www.peachparts.com/shopforum/tech-help/262187-convenience-control-module-unit.html
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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  #6  
Old 07-16-2015, 09:41 AM
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Thank you for the suggestion. I'll try and have a look later today.
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  #7  
Old 07-16-2015, 10:14 PM
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Join Date: Jul 2015
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Nothing under the seat I'm afraid, as per post #9 in the thread linked by mpolli. I wonder if I simply do not have a convenience module at all, because I have door modules, and that cars that do not have the door modules have the convenience module. Two different systems used depending on the market where the car was sold, the year of production, or other factors. Maybe? But that wouldn't explain the systemic failure...
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  #8  
Old 07-17-2015, 02:11 PM
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Join Date: Sep 2004
Location: Seattle
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So, I think you need to ignore whoever told you about the Convenience Module as I don't think the car has one.

Read this thread and see what you think:

http://www.peachparts.com/shopforum/tech-help/311437-1999-clk-430-crazy-electrical-problems.html

I had a bad rear door module and my friend had a bad one also on his '99

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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