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#1
10-28-2018, 06:03 PM
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1999 e320 CAN bus question
ok, 1999 e320 that i've had for about a year. since day 1 the left rear window didn't work, the other day the driver seat, window and side mirror all went away. 2 days later the remote locks failed.
after some research into the CANbus system and related module issues, i replaced the driver door module but there was no change. my question is this: if you replace the bad module do you still need to d/c the battery for a while to clear the CAN bus system? i d/c'd the battery and now everything works (including the lr window), as has been described, but i wanted to see if it might all stop working or not. thanks
__________________
0o==o0 James 4:8 "...let us put aside the blindness of mind of those who can conceive of nothing higher than what is known through the senses" -Saint Gregory Palamas, ---Discourse on the Holy Transfiguration of Our Lord God and Savior Jesus Christ Centrally located in North East Central Pa. 
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#2
10-29-2018, 02:34 AM
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Going from memory, but the problem may still recur if you didn't get the correct module.
The way I isolated the culprit (it was a rear window module) was to find the CAN hub under the front passenger A-pillar. Then I would disconnect one wire to a module, do a battery disconnect reset, then drive around a few days until the problem recurred or not.
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Prost! 
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#3
10-29-2018, 08:27 PM
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it returned today but in a slightly different order. both front windows, driver seat, side mirrors.....both rears still work as does the alarm.
so i understand, the CAN bus is under the passenger mat. you would isolate one module at a time by d/c one wire then reset the battery and once you get the correct one d/c/isolated the problem will NOT return? how does one know which wire corresponds to what module? thanks g Quote:
__________________
0o==o0 James 4:8 "...let us put aside the blindness of mind of those who can conceive of nothing higher than what is known through the senses" -Saint Gregory Palamas, ---Discourse on the Holy Transfiguration of Our Lord God and Savior Jesus Christ Centrally located in North East Central Pa.
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#4
10-29-2018, 08:59 PM
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For some unknown reason the right rear door module always gives trouble on the CAN bus, go there.
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 90 300TE 4-M Turbo 103, T3/T04E 50 trim T04B cover .60 AR Stage 3 turbine .63 AR A2W I/C, 40 LB/HR MS2E, 60-2 Direct Coil Control 3" Exh, AEM W/B O2 Underdrive Alt. and P/S Pulleys, Vented Rear Discs, .034 Booster. 3.07 diffs 1st Gear Start 90 300CE 104.980 Milled & ported head, 10.3:1 compression 197° intake cam w/20° advancer Tuned CIS ECU 4° ignition advance PCS TCM2000, built 722.6 600W networked suction fan Sportline sway bars V8 rear subframe, Quaife ATB 3.06 diff
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#5
10-30-2018, 02:37 AM
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Agree there's a high probability it's the rt rear door module.
To your question, after finding the CAN bus connector (see link), you disconnect a wire and see what stops working to figure which goes to where. https://www.benzworld.org/forums/w210-e-class/1630519-cannot-locate-canbus-bar-here-some.html
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Prost!
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#6
10-30-2018, 11:05 PM
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i have one so i will try it and see.
thanks for the help gents! Quote:
__________________
0o==o0 James 4:8 "...let us put aside the blindness of mind of those who can conceive of nothing higher than what is known through the senses" -Saint Gregory Palamas, ---Discourse on the Holy Transfiguration of Our Lord God and Savior Jesus Christ Centrally located in North East Central Pa.
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#8
10-31-2018, 02:23 PM
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In the rear doors, it is attached the window motor.
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Prost!
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#10
11-10-2018, 08:18 PM
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After I d/c’d the rt rear window the front window no longer works, which I could live with...,,however, now the auto-dimming rear view mirror and rain-sensing wipers are not working, which truly sucks.
__________________
0o==o0 James 4:8 "...let us put aside the blindness of mind of those who can conceive of nothing higher than what is known through the senses" -Saint Gregory Palamas, ---Discourse on the Holy Transfiguration of Our Lord God and Savior Jesus Christ Centrally located in North East Central Pa.
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#11
11-10-2018, 08:38 PM
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Whenever I encounter instances of mass revolt of varying systems and appliances I first
check the battery compartment for ANY signs of moisture, water, water marks, etc to rule out body drain passages or failed gaskets. That area is a target rich environment and convergence of control units (pneumatic, electronics, electrical....)
__________________
-- raymond~ 47º 34'N 122º 18'W
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#12
12-12-2018, 06:20 PM
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so now the interior lights stay on for about 10 minutes after i lock the car and the rear courtesy light won't go out until the car is shut off....plus the other issues pop up from time to time
Quote:
__________________
0o==o0 James 4:8 "...let us put aside the blindness of mind of those who can conceive of nothing higher than what is known through the senses" -Saint Gregory Palamas, ---Discourse on the Holy Transfiguration of Our Lord God and Savior Jesus Christ Centrally located in North East Central Pa.
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