What causes a blower fuse to not come on?
Your only probable failures are blower fuse, relay, relay fuse. With all checking out OK, it would appear that there may be a wiring issue between the relay and the blower. This is fairly uncommon however.
What to do if your Mercedes heater blower is not working?
My blower motor was fixed in with 3 posidrive screws. Had to use a stubby screwdriver on one of them too due to a serious lack of room. Check first before just pulling it out Rooty.
What to do if your blower fan wont come on?
Using a piece of scrap wire, we want to supplement a ground to the motor, expecting the transistor or ac ecu to be not supplying ground. To do this, we will take a piece of wire and back feed it into the blower fan connector on the — terminal ( |– ) then attach it to ground briefly (you can use the door check bolts in the door jam
Why is my C230 Komp heater not working?
C230 Komp blower has been off and on since last year, and only working on 5 when it did. Worked fine over summer. Now that it is cold, it stopped for the most part. Read the threads here….pulled cover off from under passenger foot well and access the blower motor and wiring. Wiggled wires and checked connections and that did the trick.
What to do when your AC Fan is not working?
Checked for incoming resistance ground to the blower, from the dash control switch and it works. Checked for battery at the blower, when the car is running. There is no battery to operate the blower. Rotated all the PDC relays around, they have the same ID, other than ABS pump.
What to look for when your car fan is not working?
Your vehicle should have a complete relay diagram showing the location of all of the vehicle’s electrical components such as fuses and relays. To fix any blower, the first things to look at are the fuses, relays, and electrical connections.
Where is the blower fuse on a Dodge?
Dodge owners manual shows the 40 amp blower fuse, #25, but does not mention any blower relay in the PDC. All the relays in the PDC have designated legends on the cover, but none indicate they are for the front blower relay. Haynes also states this blower relay is powered via a fuse in the junction box from under the dash, #12, 10 amp.
My blower motor was fixed in with 3 posidrive screws. Had to use a stubby screwdriver on one of them too due to a serious lack of room. Check first before just pulling it out Rooty.
How to tell if blower motor is failing?
If you suspect your final stage is failing, look for the following symptoms: Blower motor speed fluctuates from high to low. Blower motor does not turn ON. Blower motor only runs at one speed. Over time, a blower motor may become noisy as the motor electrical contacts wear.
Where are the fuses on a Mercedes Benz blower?
Working at the left corner of the dashboard, open the fuse panel door. Check fuse #25 30 amp, fuse #41 15 amp and fuse #30 30 amp for continuity. Use the fuse sheet supplied with your vehicle (yellow arrow) to confirm fuse location and assignment. The paper should be stuffed into a compartment in the side of your fuse panel.
What causes a fuse to blow on a blower motor?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
What causes a bad or failing blower motor relay?
Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…
What to do if your fan blower is not working?
Took it in the garage, removed the fan, removed the screw holding the plastic housing on and then tried to pry the housing off the motor. It cracked the housing slightly, so I went to plan B: put the fan nut back on the shaft, sat on the floor and held the shaft nut with a pair of vise grips and used my feet to push the plastic housing off.
Where is the fan motor on my truck?
So I pulled my fan motor (Located by the passengers foot, under the glove box). To get at all 3 mounting screws I had to remove a side panel which was connected with clips and just pulled off by hand. Removed the motor but left it connected to the truck. It was a nice day so the motor was working. Man that thing is powerful
Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…
What to do if your car AC is not blowing?
Depending on what kind of car you have, it should be a pretty simple fix. The problem sounds like it is with your blower motor, not your AC system. Hopefully, the blower motor simply blew a fuse. Find your fuse panel and check the fuse for the “blower motor” or “vent fan” or something like that.
What to do when your air conditioner fuses dont work?
If the wires of the clamps are not appropriately set on the terminals of the fuses, your air conditioning unit still won’t work. To find out if you were able to replace your fuses properly, turn on the circuit breaker of your unit as well as the thermostat. If the unit works efficiently, you’ve done a good job.