PeachParts Mercedes-Benz Forum

PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Tech Help (http://www.peachparts.com/shopforum/tech-help/)
-   -   1987 300e A/c Push Button Problem (http://www.peachparts.com/shopforum/tech-help/70710-1987-300e-c-push-button-problem.html)

TAYO 07-21-2003 10:29 PM

1987 300e A/c Push Button Problem
 
WELL DONE PEOPLE, PLS I HAVE 1987 300E ,RUNNING PERFECT A/C EVEN WORKS,PROBLEM IS RECENTLY,THE A/C WOULD COME ON BY ITSELT,WILL PUSH BUTTON TO 0 TO MAKE IT STOP BUT WILL IMMEDIATELY COME ON AGAIN ,THIS IS DRIVING MY WIFE NUTS, IAM THINKING IS IT POSSIBLE TO WIRE THE 0 BUTTON TO A SWITCH U KNOW LIKE IN OTHER SIMPLE CARS OR SHOULD I START LOOKING FOR 2ND MORTGAGE PLS HELP:(

wjm 07-21-2003 11:16 PM

No mortgage needed.

Let's say you need to replace. First, get pull the wood cover off and get the model number of the unit. Then check the junk-yards.

I purchases a working replacement for $50+ship using www.car-parts.com. Since you are in Maryland, you will find at least a dozen there available for $125 or less.

psfred 07-21-2003 11:49 PM

The buttons are sticky. On the 300TE, one of the POs children appearantly opened a 2-liter bottle of ginger ale in the car after dropping it -- there is sticky stuff everywhere and I can smell ginger ale when I remove the wood console trim.

One of the things that got sprayed is the pushbutton unit, and you have to hold the buttons down to get it to change modes -- the button for "normal" and "economy" both stick, so when you change to something else, you have to hold the other button down until those pop out.

You can take it apart and spray some contact cleaner (the alcohol based ones ONLY, please, not carb cleaner, it will melt everything!) and see if that cures the problem.

Otherwise, it's a replacement PBCU, new or used.

Peter

ejsharp 07-22-2003 02:07 AM

I took mine apart and fixed it. Has something to do with the temp setting wheel if I recall correctly. They can be fixed. Maybe do a search. I believe I did a post or two on how to repair the unit.

TAYO 07-22-2003 11:58 AM

PUSH BUTTON
 
THANKS EVERY ONE FOR YOUR REPLIES, SOMETHING I HAVE TRIED IS STICKING IT IN POSITION USING TOOTH PICK AND IT STAYS OFF ,SO IA M THINKING IS THIS THE CASE OF WEAK SPRINGS INSIDE THE UNIT, CAN THE SORING BE REPLACED, CAN SOMEONE TELL ME HOW TO REPAIR THE UNIT ETC ,,THANKS

pesuazo 07-22-2003 04:04 PM

Solution to same problem
 
DO NOT SHOUT. It is rude and offensive.
Remove the CCU (Climate Control Unit), and resolder all button connections to circuit board.
Do a search, all instructions have been posted many times.
Good Luck, and post the success story.


All times are GMT -4. The time now is 06:39 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website