Question about 1996 Mercedes-Benz E-Class

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Heater blower does not work,

Heater fan motor and fuse proved to be ok. can't find a Siemens component 539.9879.770 (4 x 30cm red,black, blue, yellow cables to a RESISTOR)

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6 Suggested Answers

  • 1 Answer

SOURCE: heater/blower fan not working at all after intermittently working

Heater motor is prone to water damage when the small drain scuttle drain gets blocked (usually by leaves).
If the passenger footwell carpet is damp, that's probably the problem.
Worth checking regularly anyway, and/or remove the small cover over the drain which is part of the problem.
Remove the heater assembly (located over passenger footwell) and replace is the easy answer.
It is possible, depending on ability, to strip and repair.
New from Europarts around £130, used around £60.
Have fun!

Posted on Nov 19, 2008

Ray190te
  • 61 Answers

SOURCE: heater blower not working

Very common fault was the blower regulator fails (blower resistor)

Posted on Jan 24, 2009

lastech
  • 408 Answers

SOURCE: blower motor works only on high on 1995 mercedes e320

hello,good day,first try to check your blower switch,if not corrected,your blower resistor is located at the bottom of your brake booster,ty

Posted on Jul 25, 2009

  • 784 Answers

SOURCE: location of blower motor fuse

Fuse blower motor is not in the fuse box. It is located outside. lOpen the hood, on the driver side near the fender, about 1 feet from the fuse box toward the direction of the radiator, there is a retangular about 1x2 in with wire coming out from each end. Snap it open, inside is the the wire fuse.

Posted on Aug 05, 2009

  • 297 Answers

SOURCE: c180 heater fan not working all fuses ok ???

Most likely the switch or the fan motor it self.

Posted on Aug 08, 2009

michael4wgv
  • 164 Answers

SOURCE: a/c & heater blower motor not operating, fuses

Common problem with the E-class and the blower motor not working was the blower motor regulator. It is mounting right to the blower motor cover on the passenger side underneath the dash. Pull the under dash panel off and you will be able to access the blower motor cover. Pull off the cover to expose the blower motor and the blower motor regulator. Most of the time it is the regulator that goes bad but is possible the blower motor may be bad instead or also.

Posted on Oct 22, 2010

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Before changing out the blower motor, go to the underhood fuse block and check the 30A BCM 3 fuse. Next, go to the body control module (BCM) and check the 10A HVAC/PK 3 and HVAC/I/P IGN fuses. If the fuses are OK, start the car and operate the A/C request switch to close the HVAC relay and apply 12V to the blower motor. The motor should operate at a speed determined by your setting of the blower motor switch. If not, there could be a failure in any of the components mentioned but also the blower motor resistor string

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2006 tacoma heat/air blower fuse location


Hello! Coil of Heater Relay is supplied through Fuse "IG1 2" (10A)...Located in the Drivers Side Box...Contacts of Relay are supplied through "Heater Fuse (50A)...Located in Engine Relay Box...Blower Motor has a 2 wire connector with wire colors: Black/Yellow (Pin 2)...And White/Blue (Pin 1)...Pin 1=Ground and Pin 2=Battery when Relay pulls and contacts close...
The Blower Resistor Pack (Which fails often) controls the fan speed...BUT, there is a fuse inside the assembly...If it blows = No Fan...Located on the top of the heater/AC box and can be accessed through the Glove Compartment...Guru...Saailer

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How do I fix the heater switch on a rover 25 1.4i Y reg


** First check the Fuse 19, 20A, in passenger fuse box (see manual- under steering wheel). then earthing connection E5 (Front LH inner wing.
**electricat connections are most accessable at Motor resistor bank, behind glove box (released by 8mm 2 bolts underneath ) Resistor pack in front of blower motor, 2x 6mm bolts. flick or squeese electrical relaese tab**



** Check the state of the motor speed resistor pack/ prone to resistor/resistor wire failure , which is behind the glove box,

The motor circuit is Green, live feed , to motor, slate black to motor speed selector (resistor pack), Output (slate or Yellow or Green or pink And Black) then Heater selector switch to earth (black).
- The feed from the motor is Slate/ Black wire. It pass through (or bypasses) resistor bank which limits the current through) the motor thus controlling. the speed. This has 4 connection slate grey from motor.

**Check 12v feed on blower Motor connector Green +ve , Slate Black to Earth. if ok, short Slate/black(Sl/Blk) to earth motor should run.

-Slate/B black (S/B) via No restor to switch, pos 4,

-Yellow/ Black (Y/B) via High resistor to Switch Pos 3
--Green/ Black (G/B) via Medium resistor to Switch Pos 2.
--Pink/ Black (K/B) via Xresistor to Switch Pos x.


From heater selector all final connection to earth are via to Black wire to earth on ineer LH inner wing.

Jan 17, 2012 | 2004 Rover 25 1.4

1 Answer

Where is the heater/ac fan resistor located on a 1999 vw beetle


Attached to the blower motor is a device called the Resistor Pack...
It has a 4 wire connector...Wire colors are...Yellow...Green...White/Blue...And Blue.
Inside this resistor pack is a fuse. If you use an ohm meter.
One probe on Yellow wire and other on the Blue.
If it reads "open" the resistor pack is defective.If you read resistance
the pack is Good. Main power to the circuit is supplied via fuse #25 (25A) located in the under-hood fuse box. So simple answer is .The blower motor resistor is located close to the blower.
Let me know.

Dec 28, 2011 | Cars & Trucks

1 Answer

Pontiac montana 2000 general fan (all air-hot and cold) doesnt function changed the fuse and now only works from settings 3-5 and change the heater relay is my fuse labelled 'air" not the right...


there is a blower motor resister which controls fan speed i believe its located pass side of dash by blower motor has one plug about 5 wires red ,orange .blue yellow

Feb 09, 2011 | 2001 Pontiac Montana

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The heater fan quit working on my 99 chevy suburban today. Any ideas on how to get it working.


KEY ON, FAN ON HIGH TAP FAN MOTOR NEAR WHERE POWER GOES IN, IF BLOWER RUNS REPLACE BLOWER MOTOR.

Jan 28, 2011 | Chevrolet Suburban 1500 Cars & Trucks

1 Answer

The heater fan just stopped...


Check fuse #14(10amp) located in fuse box under driver steering wheel behind the lower dash cover.
Check fuse#12(40amp) located in fuse box under hood.
Replace fuse(s) if any are blow.

If fuse are good.Check blower and transisto next.
Do steps 1-3 with turn key on
1. Unplug connector and check for 12v at the blue/white wire at the blower motor(2-NAT)
-if there's no voltage you might have a bad relay or open in the wire
-if there's about 12v, go to step 2
2.Plug connector for blower motor and unplug connector for blower transistor(4-NAT). Take a jumper wire and jump the blue/black wire to body ground.
-if blower does not run, replace blower motor
-if blower motor runs, go to step 3
3.check the black wire at(4-NAT) for good ground.
-if you have good ground, then replace blower motor transistor.
good luck

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Jan 18, 2011 | 2004 Honda Element

2 Answers

My heat has stop blowing. replaced blower, and heater on off switch. what else could it be?


LX? DX? EX? Hatchback? sedan? wagon?coupe? engine size? did you check the fuse? Fuse #19, 30 amps in the auxilary fuse box (your owners manual may show the location ,it may be near the blower ?). The Blue/White wire at the heater blower motor should be HOT (12v) with key on. If you ground the Blue/Black wire the motor should run full speed.

Dec 17, 2010 | 1991 Honda Civic

1 Answer

The heater / blower in my 1992 dlx has stopped working all fuses ok


Hello hfg.

1. First of all, tap the blower motor gently to see if it starts it. If it does, the brushes or the armature in the motor are worn- replace the motor.
2. If that doesn't help wiggle the connector on the motor and the blower motor resistor. There may be burned or loose connections.
3. If you have power on fuse 7 with the key on, then check for power at the blower motor on the blue white wire. If no power on it you have a break in the wire between the fuse and the blower.
4. Next, check for power on the blue black wire. If there is power there that proves there is continuity through the motor(that's good), if not, replace the motor.
5. The blue black wire then goes to the blower resistor. this resistor gives the different blower speeds.
inside the resistor there is a thermal fuse. It isn't replaceable, only the resistor as an assembly.
If the thermal fuse blows it may indicate that the blower motor is beginning to wear out and draw too many amps. And then you may need to replace both the blower and the resistor.
Check with an ohmmeter across the thermal fuse. If it is open circuit, replace the resistor and the blower. If you don't replace the blower it may blow the new resistor again.
6. If it all checks out to this point, ground the blue/red wire at the resistor. If the blower comes on the problem then becomes the blower switch or a break in the wire to the switch.

Whew.. Hope this helps solve the problem, my fingers are sore..Ha.

Thanks for using FixYa.

KL

Dec 04, 2010 | 1996 Isuzu Rodeo

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