Question about Mercedes-Benz S-Class

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S500 4matic 2004 the heater blower fan not working

What fuse or relay do i need check because the fan will not come on

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The dealer has some problems with these I think. Bad fuses and such. Check to see if the blower motor is getting power after you turn it on. Check to see if the resistor block (in series prior to the blower motor) is good.

Posted on Mar 19, 2014

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Posted on Jan 02, 2017

  • 261 Answers

SOURCE: Heater Fan/Blower does not work.

what you need is a blower motor resistot

Posted on Dec 04, 2008

  • 1 Answer

SOURCE: heater fan not working

my car is Isuzu rodeo, this morning found the blower of heater not turning no heater work.

Posted on Dec 13, 2008

  • 449 Answers

SOURCE: Heater/Air blower not working.

check fuses. first then check controller before changing the blower.

Posted on Dec 24, 2008

ghost4548
  • 776 Answers

SOURCE: blower fan not working - Hyundai 2004 Santa Fe

Try a SHOCK test to the blower motor case. What I mean is SHOCK the case by hitting it with the palm of your hand (make sure you have the blower switch 'HIGH' and the IGN key also 'ON'.. if the blower starts working, you have an intermittent contact in the motor itself. If this doesn't work, get a test light and connect it to the connector that plugs into to the blower motor - if the test light illuminates, then the problem is obviously in the motor. If it doesn't, then you have a wiring/switch/power supply problem.

Posted on May 27, 2009

SOURCE: blower motor does not work

I had the same problem, replace, replace, replace. Check, check and recheck. What I found was the blower motor resistor, located in the blower squirrel cage area, two prongs and a curly wire, was bad. Took the new one back, (it ohmed out okay, continuity ok, all ok!) replaced it with another, and Bingo, problem solved. Frustrating to say the least. After two relays and a blower switch, and test, test and retest. It was a faulty resistor. Made in Mexico. And no guarentee, even though new, it works. Trial and error. Even the dealer parts are Honcho en Mexico. Thanks NAFTA. You gonna make us all welfare babies.

Posted on Sep 28, 2009

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Heater fan not working


Smack it and see if it comes on. If it does then the motor brushes are bad. If it does not come on, check the fuses. If the fuses are ok, check the voltage on the plug to the motor.

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Thanks for the opportunity to let me help. The blower control switch in your vehicle also uses a blower relay. This relay is generally located on the firewall on the passenger side near the heater fan. You can also look in you vehicle owners manual for the location of the blower relay, it may be also be located in the fuse and relay box under the hood. Generally speaking if the highest setting doesn't work on a GM vehicle it is a high blower Relay. This item is not expensive and can be purchased at most all you local Auto parts stores. If you have a Napa, Orielly's, or AutoZone these stores will also likely help you in the location if you are unable to locate this relay. Here is a general picturepepsiman1967.jpg The installation of this relay is either to remove from the fuse box, or if located near the heater fan housing then you will need to remove the mounting screws, remove the wiring clip, then reverse to install. I hope that this has helped you. D.R. Wilkins

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Hi!!
Look in engine compartment close to battery for fuse box, remove cover and inside cover there is a diagram of fuse/relay locations.
You are looking for a fuse and relay, it should say blower fan or AC blower fan. First check fuse, if Fuse is ok. check Relay.
Good Luck!! Don't forget to rate this post!!

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