W124 climate control not working. Jul 21, 2024 · T...
- W124 climate control not working. Jul 21, 2024 · That sensor tells the car how to adjust for the temperature you tell it you want on your scrolly dial. Get expert tips—read our guide now for a smoother drive! OldBenzJunkyard - OEM Catalog Style. Ribbon fuse R15 is Hi I have a 95 e300 which I got a couple of months ago. If your heater motor won't come on, first check your fuse or relay. $72. The system runs fine when the ambient temperature is not that hot e. The a/c system on these cars is complex and requires a little bit of study to As above, is it a fuse or relay problem? I searched under dashboard but nothing shows up unless buried deep in a thread. e. Coolant temperature gauge still not working after replacement 1 pin sensor I replaced the 1 pin sensor on my OM602 92 W124 and have seen no improvement in the ability of the thermostat gauge on the instrument cluster. If the control voltage never appears, the regulator will never turn on the fan. However when the outside temperature gets hot the system will either 1. 1. It doesn't -- just bending/flexing the top door Repair of the climate control on Mercedes classic cars R107, W126, W123 and W124. If it's not working, the climate control doesn't know what to do. I laready recharged the A/C and it blows nice and cold, all I need is to reset the unit. MERCEDES W204 Climate Control Not Working. The repair manual says that the HVAC box must come out of the car. If you are not sure if the switches are the problem, we recommend you get the covers off and power the motor directly with a 12 volt power source. In this condition, A/C-cold air and outside air work as they should. Fan speed chaos is also a symptom I had, rarely but it did happen. After removing the knobs you will see the flat brass nuts exposed, you will also see the two bulbs that Currently though, the car does have some minor issues, but this one, the climate control issue is the one that's most important. replaced blower motor yesterday, works better but did not solve the problem. This control voltage is coming from the climate control unit on the dash. That means NONE of our 124 repair kits for the heater Welcome to our Mercedes-Benz W124 E-Class Technical Articles section. I have searched Hi Guys, When I bought the car (88 300ce) I discovered that whole climate control system can malfunction in 2 ways: 1) Non of the 3 buttons work when If the control voltage never appears, the regulator will never turn on the fan. Climate control fan speed buttons were not working, fan would not work. Until about a week ago the climate control was working fine, with exception to the fan, it's has some minor squeaking noises which means that it will eventually go out, but it still works fine. I purchase another unit and now I'm needing to know how to remove the old and install the new. The Mercedes E Series, 124 Type Electronic A/C & Heater Control unit is a black electronic function control designed for specific models of Mercedes cars from 1988 to 1995. That unit could be faulty; I've replaced mine with one from a junkyard and most of its functions are OK as far as I can tell. My heater has other problems; some flaps don't open/close as they If that does not resolve the issue, the Climate Control Unit could be suffering from an intermittent connection, which is most likely due to a bad solder joint due to the age of design of the W124 electronic modules. Pull out air volume and air vent distribution knobs. The light on the selector illuminates but the compressor does'nt run. I have the push button auto-climate control in my W124. W124- 200-E 16. I am one of those oddballs that actually likes the way the W124 Climate Control works, and in all of my cars I always keep it working. Fits the following: All 124 chassis sedans, coupes, and wagons from 1986 to 1993. Connect the My 1989 W124 estate is fitted with dual air con. The control unit has dual temperature thumbwheels, air flow direction and blower turn switches inside those, and three vertical switches in the centre of the panel. does the unit control blower speed as well as temperature? I have a 1989 300E W124 (in Japan, but left hand drive). W124 1991 300d. The time now is 10:08 AM. I've never had a car with air conditioning, but from everything I've read online, it seems complicated and The climate control system in my 1987 300TDT seems to be operating improperly since I cannot get heated air out of the footwell flaps. We are finding more heater fan motor failures in the 124 chassis cars as they age. I just had a question regarding mine. Can't find what you're looking for? That sensor tells the car how to adjust for the temperature you tell it you want on your scrolly dial. What's the best choice here? All 124 chassis sedans, coupes, and wagons from 1986 to 1993. 8K views 9 replies 6 participants last post by khomer2 Jan 29, 2023 First some background: After neglecting my W124 for the past couple of years, while I fed my 107 addiction, I decided to address the inoperable climate control in my W124. iRepair Autos rebuilds Wanted to know where exactly our the sensors located on the W124 Climate Control Unit - which determine the temperature settings for the heating & cooling systems, independently for the driver/passenger side? The 'manual' BOSCH climate control units do have a tendency of failing on these cars, and apparently through out the line of production, different units with different wiring grips [#of Originally Posted by gsxr 124-800-00-75 - Defroster flap control 124-800-02-75 - Center vent air flap control 124-800-03-75 - Cold air flap control (di W124 climate control unit heat not workingoptions? So it's finally cooling down here and my heat is not working with the regular CCU. 1993 1 reading Jump to Latest 1. 125. I know this has nothing to do with what we are talking about on this page but don't know where to post the question but at the moment I've got an issue with my climate control not working it's dead and I've also got the cooling fan running at high speed as soon as I start the engine. It always reads less than 60. Small isn't bad. First of all I would like to say hello as I have only just recently become an MB owner for the first time (W124, 1989 300D saloon), and this is my first post! Basically, I have a problem with the analogue climate control fitted to the car. Since purchasing it, it appears to be stuck on the Hi, As is apparently common I have some issues with the climate control in my 400e. Compatibility / OEM Info. It's a very good thing to be small. I've just had my air con recharged after the EC light came on last week and would not go off to allow the air con to operate. I have a long-standing problem with the dashboard illumination. < 25 deg C. w124 climate control, stumped, please help Jump to Latest 3K views 0 replies 1 participant last post by lkkittle Apr 26, 2013 L CLK430 Climate Control Unit removal I'm having the same problem with the buttons no longer functioning. Re: HOW-TO: Replacing the HVAC vacuum pods In terms of the pod in question, the boxes are pretty much the same for all W124 cars - I don't know that it's easier for the earlier cars as the design is essentially the same, and the pod inside is accessed after removing the top door. SOLD – I have a W124 Climate Control Unit (CCU) – the thing with the pushbuttons – for sale. NOTE: WILL NOT WORK ON MODELS W/ INTAKE AIR DUST FILTER. Use your thumb and forefinger and pull firmly and directly out (like you do when you pull the headlight knob to get fog lights) Just pull firmer and harder, they will slide out 3. Any suggestions on repairing them? They should be replaceable,right? for my 1992 W124 230E 1. Here I'd like to open discussion about the crazy project I have in mind. . The sensor is not cheap so make sure you check the dash unit before replacing the sensor. 2) Press the REST push button for more than 6 seconds. But Here is the issue: 1995 W124 E320, go to turn on heat, nothing. 00 $120. They no longer click on or off. All the instructions I found There are three air temperature sensors on the car: one for the engine air intake, one for the climate control system and one that shows the outside air temperature in the dash. 5TD). HOW TO FIX YOUR CLIMATE CONTROL SYSTEM ON A W124/C124 ! Young Timers Garage 7. The rear park lights work and the bulbs in the front are good so the headlight switch is also ok. I have read through some of the posts about the AC problems with the w124 chassis. Removal and repair of the heater control unit (climate control unit) Overview of the climate control system of a Sep 12, 2025 · Discover how to identify and fix Mercedes climate control issues. They do not blow hot or cold air. I guess a plastic piece behind the buttons of the climate control unit has finally failed. When I click the button for just outside air or AC on my car, the fan doesn't blow. If the blower fails to deliver cold air despite a working compressor, check the blend door actuator controlling airflow temperature. My heater has other problems; some flaps don't open/close as they I have search the forum for this problem and people offers many solutions but never see if the problem was fix it or not and what was the real cause Here's what to do if the air conditioning isn't working on your W124 Mercedes. g. 3. red lights on Climate control backlight not working. This is a A/C step by step DIY troubleshooting guide I found online. 8K views 9 replies 6 participants last post by khomer2 Jan 29, 2023 Hey everyone, I have a 1987 300e. The car was originally delivered to Japan before finding it's way If your climate control system is not working correctly, you now know that it could be one or more of three things: a bad push-button unit, one or more bad vacuum pods, or a bad manifold. NOTE: WILL NOT WORK ON MODELS W/ DUST FILTER. has constant voltage when ignition turned on but fan buttons im not even sure if its air con or climate or if there is even a difference the drivers side temp control wheel does not work, if you increase the temp from the coldest setting it gets very hot very quick any ideas? the passenger seems to work fine, so guessing its the thermostat, can anyone shed and light on this many thanks Michael Click to I have an issue on my 93 w124 that I can't seem to figure out. Save money by doing your own work and perform the repairs using the information we've provided here. The purpose is to install the automatic control unit from R129/W202 in the W124 radio cassette Climate control backlight not working. 95 Free shipping MERCEDES W124 ZEBRANO WOOD CENTER HVAC CONTROL PANEL BEZEL E320 300E CE TE D 400 Do you have straight air conditioning or climate control i. Put your multimeter on DC Volts setting 4. I have checked the fusible If your climate control system is not working correctly, you now know that it could be one or more of three things: a bad push-button unit, one or more bad vacuum pods, or a bad manifold. I have been looking all over with negative results on how to reset the A/C control unit to stop the sticky EC mode. This so I finally decided to tackle the dead blower fan issue in my 94 E420. This article deals with the outside air temperature for dash display. Due to the colder weather I've been wanting to use the heater, but nothing comes out once I press any of the climate control buttons. Pull Klima A/C Relay Out. This video shows you how to remove and install these Climate Control Units. ) Shut down completely i. No servos for blend doors, no AC, no fan, nothing, on any setting. However thismorning the whole My 1989 230e has Air Conditioning that was described as "needs a re-gas" when I bought it. If that happens, the MAX and MIN buttons make it work properly. The fan works as it should on high and low setting. This part is a genuine OE/OEM part with the part number MB 1248303185. The blower motor does come on when I activate the blower speeds and the air that comes out This is applicable to my 1990 300E-24 - there definitely are differences with other versions / model years. Turn Car Off 2. Since purchasing it, it appears to be stuck on the Read 1987 Mercedes-Benz W124 reviews from real owners. The system has recently been topped up and tested for leaks. My car is a 1994 E320 estate. I ordered a new replacement Bosch unit, part 0008301908. Scene: It won't read above 60 degrees ! It's been warm here these last coupla days and standing in traffic i'd expected 80 or 90 degrees on the guage. Initially the blower would occasionally make a squealing sound, but if I turned the A/C off and back on it would usually go Climate control as a diagnostic tool READING SENSOR VALUES 1) Turn the ignition on. All times are GMT -4. Sold As is for parts not working, comes as pictured This fits the following vehicles with these options 86-87 Mercedes 300D 86-87 Mercedes 300TD We have many parts for many different cars. What the problem is: 1. Page 4 of 4. only when driving down road will fan turn. Probably everyone knows that the slot for W124 radio cassette player is identical to R129/W202 automatic climate control unit. The only way I can get heat to come through is with defrost setting, the spin dial, even when spun all the way to heat and let it click to max, just blows ambient. Find out what they're like to drive, and what problems they have. Levers 1 and 4 both have the micro adjustment that operates the vacuum connected to the fresh air flaps under the grilles forward of the windshield. Compressor clutch wasn't engaging and it didn't have freon Is your air conditioner A/C not working or blowing hot air? The Air Conditioner system can get very complicated in cars, but that doesn’t mean that you can’t perform some troubleshooting yourself. Over the past few days the "auto" function has been a bit hit-and-miss - sometimes it works, sometimes the fan stops blowing completly. Options for repairing it yourself and saving big $$$. If the motor will just not run, many times the problem can be solved The climate control system in my 1987 300TDT seems to be operating improperly since I cannot get heated air out of the footwell flaps. The main air / recirc flap position is not directly related to the EC button. I just can't figure out how to to use the Air Con system, I was told this model has a semi-automatic A/C system and is controlled by the temperature dials on each side. DESCRIPTION: ONE - Used electronic climate control, as pictured on the table in this ad. No lights on dials for heaters, window switchs etc on mercedessource Tech help - There is no inexpensive fix for the 1994 and 1995 E320, E420 or E300D When they added the cabin airfilter in the late 124 sedans, coupes and wagons the engineers changed the size and design of the heater blower motor. This 1987 Mercedes 300e W124 does not have working front parking lights. The aircon works in parallel with the heating. (The a/c is out of gas and not working). The ac is not blowing cold air. I have found a ceramic covered resistor (?) marked BERU 0110610 030 just behind the left headlight unit. mercedessource Tech help - A common problem on all models. Oh noo climate control not working #mechanic #repair #mercedes #w124 #classiccar #airconditioning PRO Mechanic 153K subscribers Subscribe My two center air vents have stopped blowing. The part number is 124 830 02 85. Simultaneously press the down and up arrow push buttons until the pre-selected “72 °F” temperature setting is displayed. Hi Folks, A couple of silly question about the dashboard engine temperature guage on my 124. Initially the blower would occasionally make a squealing sound, but if I turned the A/C off and back on it would usually go 87 300D W124 climate control not working LinkBack Thread Tools Display Modes # 1 07-22-2015, 11:53 PM cropduster Registered User Join Date: Jul 2015 Posts: 20 87 300D W124 climate control not working High all, I am having this really weird inconsistent problem with my AC/Climate Control. AC in car stopped working Mercedes? Learn the common causes and how to fix your cooling system fast with this simple diagnostic guide. to/40DFA5U Assorted Fu Hi I'm having issues with the climate control on my1990 w124 300e. Press the AUTO push button. We've gathered a vast collection of useful articles to help you perform many repairs and upgrades on your Mercedes-Benz. W124 Air con problem I have a 1989 W124 200, the aircon on which has stopped working. 07K subscribers Subscribed Jul 19, 2017 · Greets, the CCU stopped working recently- the #7 fuse has power and is good- I can hear a clicking when I put it in with key on coming from pass side- 320 E W124 often faces heater control valve failure and blend door actuator issues affecting airflow temperature. Vacuum pods direct airflow through the HVAC system Not having A/C caused much frustration for me with the brutal heat of Texas summer. It also depends on interior air temp, exterior air temp, and the desired First of all I would like to say hello as I have only just recently become an MB owner for the first time (W124, 1989 300D saloon), and this is my first post! Basically, I have a problem with the analogue climate control fitted to the car. A faulty actuator or stuck blend door can prevent cold air circulation. I can get it to go off if I press it in for about 20 sec. Hand Brake warning light comes on, indicators too, but no other instrument lights or light for headlights etc come on. 0L. Its next to the OVP relay & fuel pump relay behind the battery. It's the push button type climate control. The illumination of the head/tail/fog lights switch and the climate control and fan switches doesn't work. I've just acquired a w124 with aircon so have spent a little time trying to work this all out and this is what I've come up with. You can test the valves without removing the manifold and all the vacuum lines. Climate Control Fuse Location c200 c220 c250 c300 c350 Replacement Fuse Big: https://amzn. When the climate control is engaged in any mode (Full AC, EC, Defroster) The blower motor does not turn on and the AC compressor does not engage. All the other interior lighting is fine, including the rear wiper, hazard and interior rear I have just become an owner of a E200 1995 W124 Merc, and did not have a user manual. 00 Free shipping 1987-1995 Mercedes W124 Center Dash Climate Control Trim Bezel Wood W/Warranty $139. The compressor WILL kick in if I select ac. It is unique to those models only and any of the early blower motors or parts WILL NOT fit. I haven't tried to use it but have just assumed that it doesn't work and left it alone. My unit will not control the air temperature on either side, and is stuck on First some background: After neglecting my W124 for the past couple of years, while I fed my 107 addiction, I decided to address the inoperable climate control in my W124. And first: I've replaced the blower motor and regulator, serviced the mono valve, replaced the water temp sensor on the engine block. The air con recharge machine printout confirmed a recharge was required however even though the air con is now ice cold (not that you need it this time of year) the EC 1986 W124 Mercedes Climate Control Not Working Possibile # 7 FUSE Failed It Can Be Done 667 subscribers Subscribe 1986 to 1995 Models 230E, 260E, 300E, 300D, 400E, 500E, E320, E420, 300CE, CE320 Recognition: bradley_99_uk 3 posts · Joined 2010 #12 · Jun 24, 2010 hi i have an 06 slk280 with the climate control not working rest button tights up red had a/c regassed but need the reset the climate control will you instructions work for my car thanks kev Oh noo climate control not working #mechanic #repair #mercedes #w124 #classiccar #airconditioning 582 Dislike *Not working* A/C Heater Climate Temperature Control for 86-87 300D 300TD W124 Up for sale is a good used *Not working* A/C Heater Climate Temperature Control for 86-87 300D 300TD W124. Problem is noted when heat fails to deliver on cold days/morning/evening when requested by the driver/passenger. Don't you hate it when you get in after someone else has been driving your car, and the fan is on LOW and temp all the way at BLUE, or worse yet OFF? hehe. Works for the w201/w124, may work for rest. I have searched Climate Controls on Mercedes have a habit of going bad. Coolant is up Hi, The Heat and A/C does not work on my 1990 300D (2. Blower motor will not engage in any setting on the CCU. The climate control I have is the one with the 3 stacked buttons in between the direction and fan strengh rotational switches (I’ll try to attach a picture) Since I got the car a month ago, I’ve had trouble with climate control. Figure 5 With the trim piece removed use a Philips head screwdriver and remove the six screws holding the climate control unit to the center console and upper switch plate (red arrows). It Email when stock available Categories: Genuine Mercedes Part, used (working condition), W124 Tags: 1248302885, A1248302885, classic mercedes spare parts, Mercedes-Benz auto part store, W124 climate control unitMercedesbenz spare parts Description and Models it fits I did a write up on this- it's in the sticky section under climate control. mspt, jcn0q, fatvap, dmgljl, zl5ane, 8rim, 1oxby9, xzxao, jndib, 6alm,