Could a faulty resistor cause the blower motor in a 2010 Q5 to stop working and where can the part be purchased? While there are a variety of reasons your Audi A8 Quattro heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. blower not working audi a3 blower stopped working for a while then just starts working and i get quite abit of water - Audi A3 question. Checked for battery at the blower, when the car is running. audi really made a pos with this one one issue after the next and my q5 doesnt even have 50k ! Blower still does not work. ... One of the blend door actuators is not working, and it wont change to the defrost position on the Climate control. And in all my bad blowers with that symptom, I could get them going again by hitting around the blower housing. 2012 Audi Q7.....fan not blowing for AC or Defroster. Just takes patience and $6usd(assuming you have tools and don't break anything), A5oc Forum is an international Audi A5-S5 owners club to discuss mods, AWD quattro, turbo upgrades & more, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada, a5oc.com is an independent Audi enthusiast website owned and operated by VerticalScope Inc. (1) 1 product ratings - 2009 2010 2011 2012 Audi A4 Heater Blower Motor Fan 8K1-820-021-C Oem Then suddenly after a few hours, it started working again and has been fine since. While there are a variety of reasons your Audi A4 Quattro heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. Forgot to post an update here - both the blower and the regulator were replaced under warranty, as the "appeared overheated" (as per the work order). 01844 - Control Module for Fresh Air Blower (014 - Defective - Intermittent) and 01273 - Fresh Air Blower (009 - Open or Short to Ground - Intermittent). Blower still does not work. I am assuming the blower motor is good because my friend removed the ac blower resistor and he cleaned the contacts and it worked fro 2 months. Is there a fan relay that's causing this? While there are many possible causes for the blower motor to not work, a bad resistor is among the most common. I checked and found fault codes for both the blower and its control module, and found an article on the internet that said if you find that, to replace both as both parts have been redesigned to deal with issues they had. The adaptation value for the US/Canada simply shifts the curve upward for a little more voltage at each speed setting. JavaScript is disabled. The fan speed moves around on its own. I'm not saying that is the case with yours, but when the bearings get dry, the blower gets intermittent. In my case, the motor wouldn't engage at all, so it was just the motor that needed to be replaced. My advice would be to replace both parts. I have enclosed the steps to do this in the link below. I had actually suspected blower trouble for a while, but really took notice on a recent drive when the weather was colder, it suddenly seemed quieter than normal inside the car, and the windows started fogging up. performed a VCDS scan and had codes: 01273 fresh air blower (V2) 006 short to positive, also had codes for 3 vent servos. 31% of the time it's My Audi Q5, 2010, has an intermittent air blower, sometimes it won't come on, so no air flow regardless of settings. !what a piece of crap … I’ll begin by saying that I don’t have the original problem of the OP but i didn’t want to make a new thread. In order to determine if in fact that is the case you are going to need to do some testing. light and find out if your getting power or ground to the fan. It also seems the actual adaptation channel varies with platform. Feel free to shoot me an offer via PM if you're interested. The fan will be becoming seized....you can get to it by dropping down the glove box....6 bolts, 8mm head...then the fan body can be seen, it would be above your left foot if you were sat in the passenger seat...un-plug the elec connection, there is a tab on the bottom right side, gently pull this down and rotate the bottom of the fan body pushing this tab forward...the fan … While there are a variety of reasons your Audi Q5 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. I was reading some old threads from different … It's $35 from Rock Auto. You should be able to control the fan speed manually regardless of engine temp etc. In the preparation for replacement, I picked up an extra OEM resistor, but never needed it. I have never turned it off auto in 2 years lol.. 2011 A4 2.0 HVAC Blower Fan Not Working Intermittently, Black B8 A4 Avant S-Line Prestige Package, CPMB Engine, Tiptronic 8 speed, https://www.audiworld.com/forums/a8-.../#post24775915, https://www.a5oc.com/threads/air-con...01/post-958001, © 2001-2021 Audizine, Audizine.com, and Driverzines.com. ^its probably the fan control module. I checked the 30A fuse and that was OK. I've never had any interest in the fan speed except that it sticks on 11 during defroster which is too damn loud at the drive through. But more to how much voltage to supply to the fan at any given speed setting. Air lock: An air lock is a large air bubble that forms in your cooling system as the result of a … To get it to the dealer to show him the fault, turn it off altogether until you get there, Current. … Angelo, The two most common cause for the blower to fail is usually either the blower motor or the blower motor control module and since you have replaced the blower then I would suspect the control module has failed. Looking through the adaptation references more, I don't think it relates to the fan speed selection automation. Rotated all the PDC relays around, they have the same ID, other than ABS pump. The blower motor resistor or blower module gets hot as it powers the fan so, often times, they can burn out causing certain speeds of the fan in your car to stop working, the fan can be stuck on one speed, only work on high speed, or not work on any settings. If your codes are like the one esquire posted, this is a somewhat easy fix. His HVAC fan stopped working completely despite whatever setting he put it on (defrost, auto, different fan speeds and temperature, different vent locations). Check if the blower motor receives power. There is no battery to operate the blower. I had same issue with my 2011 A4 Avant worked intermittently bought the replacement blower motor from FCP euro for 125 bucks or so with lifetime warranty. a5oc.com is not in any way affiliated with Audi AG. Thus the apparently purpose of the adaptation value, which by default in the US is set to a value other than "stay on the number I specify", assuming the other thread is correct. Change it to the other value if you don't want it moving around automatically. I did a VAGCOM scan on the car today and sure enough got fault codes for both the blower control module AND the blower itself. Check my build thread for details. A5 Cab 2.0 tfsi S-Line SE 225 bhp manual fwd in Shiraz Red. Will a computer reboot help? found fuses replaced it and it was an odd ball 40 amp the parts stores only had up to a 30 amp still wont turn on !! In which case then that is definitely broken! I had a similar issue a few years back, and had to replace my blower motor itself. Then ~5 seconds later the bars automatically disappear one by one to zero. Checked continuity of 40 amp blower fuse; it's okay. My brother has a 2011 A4 and lives in NH, where it was about 10* yesterday. replaced resistor and blower motor on mine and it still wont turn on, bypassed heater control valve and it wont turn on ! I recently had exactly the same thing happen on my car. Current: 2014 S4 | MGM | 6MT | Sport Diff | MMI | B&O | CF Inlays | ADS | ACC | ABG | Side Assist | EPL Single Pulley | AWE Touring | ...pending. many thanks It's just enough vibration to get the fan axel moving again. The second module code is a result of the first issue. Anyone heard of this or have any suggestions: If it is set to "Auto", then the fans will not run until the engine is at a sufficient temperature to heat the cabin to the selected temperature. never seen anything like it ! I have had that on several cars, and in all cases it was the blower itself. I have heard that intermittent functionality, or the fans only working on one speed, generally on high, usually points to the resistor. i have a fix for this if you codes show something along the lines for blower motor B+ short to ground... Toronto area A 5 with the same blower fan issue problem , occasionally the cabin fan doesn't come on for 15-20 minutes , neither the manual or automatic setting will work the fan but it comes on by itself after a while . If the radiator fan is not working, it’s a serious problem.. Just because the radiator fan is not on does not mean that it is not working. There are several indications of a bad or failing blower motor in your Audi Q7, including weak to no airflow or certain fan speeds not working. 2009-2011 A4 VIN range 000001-999999. These may occur simultaneously, so it’s important to pay attention to your Audi’s flow. I believe the donor car had about 40k on it, but honestly can't recall for certain since its been almost 2 years. Either one can cause the blower not to run, which can make the car undrivable pretty quickly in cold weather like we're having now! I followed this 2010 lewy 2x2m thread but any one out there with more on the topic ? Otherwise the fan blower could be defective which is behind the glove compartment. Case Details: The compressor, fans and fuses have all been checked and are okay. If it receives power, check if the blower motor is burned out. Google search for "audi climate control fan speed changing automatically" brings up many hits on Audi models going back 20 years. it seems like u have either a bad switch or bad blower motor. 2009 A4 Avant 2.0T quattro Prestige, 220k miles. His HVAC fan stopped working completely despite whatever setting he put it on (defrost, auto, different fan speeds and temperature, different vent locations). Only time I touch the fan button. Then suddenly after a few hours, it started working again and has been fine since. The specific diagnostic procedure varies depending on the vehicle. AUDI Q7 4L HEATER BLOWER MOTOR FAN RESISTOR 7L0907521B (Fits: Audi Q7) £24.95. hi i have an AUDI Q7 S line 57 plate - the heaters were working fine yesterday however today morning the fan blowers do not appear to be working. Audi fresh air blower doesn’t work How to diagnose and fix an Audi fresh air blower. Thus when it won't come on I can't get any AC. Thanks for your help Alex. Rotated all the unmarked relays around in the junction box. The reason this occurs is because the motor is a BRUSH motor which uses carbon/graphite rods to transmit electrical current to the stator. you have to pry that open and look in the owners manual to see which fuse it is. Since the motor is in an enclosed case. While there are a variety of reasons your Audi S5 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower … The blower motor is prone to having issues in some older Audi vehicles including the TT. If you put the front screen heater on when you first start up the car does it fire up then? Perhaps it's the circuit that disables the fan and other loads when the engine is starting. Did you look at the adaptation value reference in the thread I linked? My brother has a 2011 A4 and lives in NH, where it was about 10* yesterday. Search Fixya ... like the heater matrix has burst this is the small radiator behind the dash that circulates the hot water for the fan to blow in. Audi has issued a service bulletin to address an inoperative Audi fresh air blower on the models listed below. Hi there I'm having same problem on my audi S3 2010 plate,calling for heating on climate control unit but fan not kicking in,I stripped out glovebox on Saturday morning,tested for voltage at fan,no power there,so breaking down before fan,I could physically see all the flaps and coggs turning under the dash but fan would not kick in.put it all back together but still none the … The seat heaters do appear to be working but again the speed seems to be very low Any ideas what the problem could be - fuse box issue due to the cold ? Hence the code. 2007 Audi Q7 3.6 A/C compressor will not engage. The V2 blower motor works fin… If I manually set the fan speed the bars on the display increase, but still no fan. AC blower stop working on my Q5 2010 and I know the compressor and fans are good and no fuse issue. Anyone have a conclusive answer that doesn’t uses auto like most of you do. Typically happens when the car has sat in the sun and real hot internally. 2012 A4 Ingolstadt VIN range 000001-096029 My cabin heater fan motor decided not to work today. fuse panel is on the side panel next to the steering wheel. Content on a5oc.com is generated by its users. Show More. The blower output stage and the pressure sensor (see figure) use a shared signal line to communicate with the control units (Climatronic). Works fine now. Average repair cost is $1,350 at 78,200 miles. I can feel some latent heat coming through and the rear demist button works OK. For a better experience, please enable JavaScript in your browser before proceeding. The only way to determine which component has failed is to grab some basic diagnostic tools, access the blower motor, and check whether or not it receives power. If the sensor fails, communication is disrupted and the blower is no longer activated. The 2012 Audi Q5 has 1 problems reported for fan/blower will not work intermittently.
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