W124 heater fan not working It has one hose in, one hose out, and a 2-wire connector. Apr 7, 2016 We use essential cookies to make this site work, In this mult-part series Michael troubleshoots a W124 heater blower issue. Jan 14, 2009 · Speaking from the perspective of US model W124's, the fan speed regulator is beneath the blower fan which is under your wiper assembly. From that drop down, select the DIY section and you'll find instructions for removal of the blower motor. Apr 1, 2018 · When I got the car, the climate control didn't work. Jan 30, 2023 · In this mult-part series Michael is troubshooting a W124 heater blower issue. The customer provided a new motor, thinking that was the issue, but unfortunately A high quality Vemo or JP Group aftermarket blower fan to suit the later W124 models (late 1993 onwards) fitted with the Behr Tempmatik air-conditioning with a cabin air pollen filter. Here is the Feb 24, 2022 · 2018 Cargo 135-- Phantom 135 Navy Blue Base Paint, Black Leatherette, Steelies, Driver Comfort, Cold Weather, Multifunction Steering Wheel, Add'l Battery (95Ah), ECO Stop/Start, Hitch, EK1 Connector, Automatic Climate, Tint, Cruise, Lighted Mirrors & Footwells, Premium Overhead Panel, Rear Windows/Washers, Rear View Mirror May 14, 2012 · The aux fan electronic speed controller compared to the old relay-and-resistor method reminds me of the difference between the W124 heater blower controller compared to the older W123 blower controller, which uses a pack of resistors mounted on the right inner fender. 12. I thought I had it reckoned as the resistor as the resistance between poles was in the millions of ohms. Using wiring diagram, the only thing Jan 18, 2015 · The thermostat is working correctly because when I don't turn the heater on the engine warms up normally to its operating temp because the fan it's not running, the issue is everytime I turn on the climate control on the fan comes on and stays on the whole time, it doesn't matter what temperature I put on hi or 90f the fan constantly stays on Aug 11, 2005 · Vemo Heater Fan Blower Motor Mercedes Saloon W124 Coupe C124 Kombi S124 E Class | eBay . While troubleshooting we connected a direct positive wire from the battery to the AUX fan and noticed that it turns on. There is a good post about this duo valve repair and is down the lower part of the forum in older posts . Connectors dont work and the number of wires don't match up to the oem resistor thing which means the only way to make it work is to hard wire it to the circuit and even then it will only work on the highest fan settinga solution of sorts, but not the one that I'm looking for. A different helper from our usual one filmed this with a different camera, so please Apr 10, 2014 · my car is a late W124 a 1994 E220 Coupe and what happened was the car sat for years I knew that when I got it so I expected problems, when I started using the car the fan was working, it squeaked but then it went away and thought its all good it worked on low and high speed normally as you expect it to, so it was good but then all of a sudden mercedessource Product - You will appreciate the instructions!: All 124 chassis sedans, coupes, and wagons from 1986 to 1993. 910 diesel engine - 132,000 1 owner miles. The non-powered status for the valve is full heat. Key must be On to test Red @ X64. Still no go. Found the blue aux fan relay. Dec 17, 2011 · Ok so that ^ was an epic fail and £30 or £40 that I'll never get back. 5v from ign to 30a bimetal fuse, 13. I did not find the exact temperature but the fan should not start before reasonably high coolant temperatures. It can get stuck open, giving you a blast of hot air even without the blower fan running all the time - not fun in the summer. May 4, 2009 · Hi guys, I was trying to trace +12V which was not coming to the blower motor and found that there was no voltage at fuse 12 (both sides, believe me), the fuse is good. On the other hand, he said I had a seized antenna mast but I got it to work using metal polish and lubricant. Oct 9, 2009 · 1995 W124 with OM606. The poster is parrot of doom and the post is -- How To Duo Valve Maintenance interesting information . If it wasn't warm enough outside, they may not turn on. If one made the mod to turn the set point to 90 C, for example, the aux fan will be working most of the time, which is NOT a good ideal. Car starts, idles and runs fine - A/C/Heater blower and recirc blower don't blow. mercedessource Tech help - A common problem on all models. However, they will usually run if it's above ~80°F ambient temp with AC on. I replaced it with 10A, ran the car with A/C on to almost 100c degree but still no aux fan on (checked 10A fuse, still OK). com and click on the resource tab. After bench testing the old blower motor we found that it was not the culpri Dec 30, 2018 · this video will show you the causes of your blower motor not working correctlyespecially if the blower motor only operates on only one of the settings ( on Jan 14, 2018 · Thinking if the auxhliary coolant pump is not working then it wont get full flow through heat exchanger ,, and only one half will get hot. We then found the relay for the fan by the fuse box. com/problems/climate-control/heater-blower-motor-wont-runKent explains the different options available After much delay, Part 3 of our W124 heater blower series is complete. Jan 9, 2012 · It only comes on when needed, like a spare tire, not used on regular basis. Fits the following: All 124 chassis sedans, coupes, and wagons from 1986 to 1993. *a little context* The car ran okay when I got it took a long time to start when cold. You could hear that the heater valve was working and that the compressor fan was kicking on with AC buttons, but no air would blow out of the vents. If you would like to help me financially with this channel, you can do so using PayPal. Blower makes "Groaning" noise on high speed only, like it has a voltage issue. To test low speed, you must disconnect the red switch at the drier, behind/below the driver side headlight. Ign sw > R15 > X64 plug at firewall. Feb 13, 2014 · Re: Acc Fan Troubles? The electric fans trigger on low speed based on refrigerant pressure, not engine temp. Dash lights are fine, Climate control lights don't work. If the motor will just not run, many times the problem can be solved I show you step by step how to change the blower fan motor on your Mercedes W124, I demonstrate on my 1989 300 CE but the same procedure will apply to all Me Sep 7, 2022 · Okay. Jan 21, 2024 · Leave the valve unplugged and see if you get heat. Options for repairing it yourself and saving big $$$. So can tell the fan is good. NOTE: WILL NOT WORK ON MODELS W/ INTAKE AIR DUST FILTER. If your heater motor won't come on, first check your fuse or relay. If you break your aux fan without knowing, you lose your last defense to bring the temperature down. Mar 6, 2025 · 1989 w124 300e gas the heater fan motor blow good for the windshield and floor but not the dash. If you don't get heat, the valve may be bad, the auxiliary pump may be bad, or you may have an obstruction in the heater core plumbing, including the core itself. Followup from the Pelican Staff: Sounds like the mode door is not working. Yellow comes from CC panel and that could be the CC fuse. NOTE: WILL NOT WORK ON MODELS W/ DUST FILTER. We have a 1994 W124. We are finding more heater fan motor failures in the 124 chassis cars as they age This may appear too simple for words, but you would be amazed how many people will actually over react to a mechanical problem and run out and buy parts BEFO Jul 24, 2009 · The series chain for that red 12v feed at the X64 plug is . 5v when running, all the way to the motor. For more info and related parts https://mercedessource. Jun 17, 2009 · The suction fan is controlled by the ECU and theoretically this part of the ECU could be broken but it should be pretty unlikely if the engine runs otherwise properly and the suction fan too starts in some cases. could you tell what it could be. 15A fuse blown. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. Nov 23, 2023 · Hi. We have checked all voltages. jftu105 Jun 17, 2024 · Yesterday our AUX fan for the AC stopped working in our '96 W124 E220 (M111 engine). He does have a code reader, so maybe they really are jammed. The A/C compressor does turn on when you put the CCU in defrost mode, but no fan. Dealer maintained (for what that matters) by previous owner. The rest of the climate control seems to work. Is your heater blower fan no longer working? Time to replace it with a good quality Vemo or JP Group replica of the original part. Nov 9, 2009 · The auxiliary fans aren't working, and my mechanic noted "jammed fan(s)" on a recent correspondence. +12V is getting lost somewhere in the way probably between ignition switch and fuse box. 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. Go to mercedesshop. Maintenance and keeping your Mercedes Benz in good shape. Dec 1, 2017 · Before I rip into the center console to check the actual fan switch, I see there is a "climate control relay" listed under parts. Feb 9, 2022 · The most common causes for AC fan blower motor not working in Mercedes-Benz E-Class are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. . Dec 7, 2009 · Follow the hose from the secondary water pump that feeds the heater and you'll see the valve up near the battery area. fpja sro nfzrwz jfrl gykbdln qibnq xqxb tykaa gvx samv jhzmo tror numqw tiy mtvxa