Blower Motor Switch Failing Often - Hyundai Forums : Hyundai Forum
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#1 Old 03-05-2008, 04:43 PM
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Cartaphilus
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I own a 2005 Santa Fe with approxiamtely 77,000 miles on it. I just had to put my third blower motor switch in it. That means this switch is failing on an average of every 26,000 miles if you do the math (actually, the last switch failed in only 16,000 miles).

Is anyone else having a similar problem and fall-out rate? It seems this switch is failing _way_ too often.
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#2 Old 03-06-2008, 07:07 PM
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Bizzenn
Do you hear a noise similar to a belt squeaking when the A/C is turned on. Because I am hearing it and it jut turned 26k. It's very faint though.
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#3 Old 03-07-2008, 08:33 AM
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Cartaphilus
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Sorry, no problems with the air conditioner. Or for that matter, with the heater. The problem I'm having is simply that I'll get in the car and the blower fan won't be running, and $135 and half a day later, I have a new blower switch...<sigh>
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#4 Old 03-08-2008, 01:27 PM
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Hyundai_81
hey Cartaphilus yea sounds like the same problem I might have had.. its the knob to adjust the fan speed and if we are talkin about the same thing Hyundai told me its the switch and its a common thing to go alot.. and should be under warrenty as far as I know.. mine it was I only have just under 57,000 km on mine when it happened. so its now been replaced and now seems to be fine so far. and shouldn't also take to long to replace by the dealership
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#5 Old 11-22-2011, 06:01 PM
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Angry Getting rediculous

OK, I have the same problem with the blower switch on my 2005 Santa Fe with manual climate controls. The original blower switch was fine until about 18 months ago. Since then the dealer has changed the switch under warranty either 4 or 5 times (starting to lose count). Each time it lasts for a shorter period before going out. The last time they claimed to change the entire controller box but it still only lasted about 1 month and is out again.

There is another issue that I would bet $100 is related to/causing the problem. Shortly before the first switch went out, I started hearing a scratchy noise through one of my speakers (read as a shorted connection rubbing). This happens even with my radio head unit off, so it's in the line to the amp. After the first two switches were changed, the noise went away until shortly before the switches died. Now the problem recurs even after the switch is changed and I am burning through switches like crazy. The noise responds to bumps in the road and even any time I bump the console with my hand, or touch the side where it meets the carpet with a finger for that matter. (again, screaming short-circuit to me) I purchased the HPP with the car so I have years worth of warranty coverage left, but I refuse to keep taking the car an hour away for service every month.

Has anyone been able to find a fix for an issue like this? For my sanity's sake I sure hope so.
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#6 Old 11-23-2011, 12:01 AM
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Are you certain they've actually changed out the switch? It's entirely possible they're simply spraying some dielectric grease in there and hoping it fixes it. Then again, you may also have a stray current somewhere in there that is routing excessive voltage through the fan switch and they need to start looking into that. The wiring bundle for the radio is also shared with the climate control behind the dash so there is the possibility that two wires have chafed and are making contact when they shouldn't be.

Best of luck.

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#7 Old 11-23-2011, 10:43 AM
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Blower switches of doom

Thanks lovemysantafe,

Though I could never be completely certain, I am pretty sure they have been changing at least the switch. Particularly since they tell me every single time they don't have the part and I need to come back again when it comes in. I don't exactly live near the dealer so that adds to my frustration. I tried to be slick once and convinced the parts dept to order the part for me before I went down. Of course when I went to my service appointment I was told after they assessed the car that the problem is the switch (which I knew already) and they don't have the part. Checking with the parts dept I learned it was backordered after I called.

My money would be on what you described as wires in the harness rubbing and shorting. Now if I could just convince this terrible dealer to actually listen to me and check it out. I have been telling them about noise that sounds like a short in the speaker since the second switch went bad, though they have a profound knack of acting like I could not possibly know of anything that may be of use. They always do the same thing, check power at the motor and deem the problem is the switch. They show no concern as to learning why the switches are burning out.

That's why I was hoping someone else had the same problem, so I could find out exactly what caused it and beg and plead for these guys to check for a specific problem that happened in another santa fe.
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#8 Old 11-29-2011, 08:40 PM
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Quick down and dirty to diag the switch is to gently push in on the knob and see if the HVAC fan takes off running.. might have to play with it, but majority of time fan will run when you push in on the knob... replace the switch..
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#9 Old 12-06-2011, 11:10 PM
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foolery
Quote:
Originally Posted by Cartaphilus View Post
I own a 2005 Santa Fe with approxiamtely 77,000 miles on it. I just had to put my third blower motor switch in it. That means this switch is failing on an average of every 26,000 miles if you do the math (actually, the last switch failed in only 16,000 miles).

Is anyone else having a similar problem and fall-out rate? It seems this switch is failing _way_ too often.
I've got the exact same problem, except I think I'm on switch #10 or #11. Last one lasted less than a week. The switch always seems to fail when I shut off/re-start the car...works before I shut it off, then doesn't work when I start the car again. It's always the high speed that fails first, and then the whole switch fails. I don't know if it fails when the car is shut off or when it's re-started.

While it could be a short, I've concluded that the switch is just horribly under-rated, or that some vehicles have blower motors with excessively high current draws. Out of some level of desperation, I just changed the blower motor (not a fun job). If I pop another switch, I'm either going to try a power diode across the motor (to shunt the inductive kick when the power is shut off) or a power resistor in series with the high power wire. If neither of those work, then the car might slip out of gear on a steep hill.

It's out of warranty, so I'm changing the switch myself. NAPA or rockauto.com have reasonably ($20-30) priced switches. I've not seen any difference in the switches from Hyundai, NAPA, or rockauto. In fact, they all seem to be identical.

Changing them is relatively easy. Only requires a Phillips screwdriver. Take out the ashtray, remove the two screws that are behind the ashtray door, and pop the lower half of the panel out (its held in by snap connectors).

There are three connectors: one at the bottom for the lighter/power connectors, and two by the Heater/AC control section. Disconnect all three and the panel is free. There is one screw that holds the switch in place, and then it turns out (the trick is there is a "lock" at the bottom of the switch that stops it from rotating...depress that, and it turns right out). The front knob and center bezel come out when you pull the switch body out. Reverse the process to replace the switch.
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#10 Old 10-03-2012, 07:33 PM
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I have an 05 also and I just installed one today. This is my 7th this year. I went thru just 1 around 30,000 miles, until the warrantee ran out then all **** broke loose. I now have 140,000 on it and I actually lost count but probably close to 15 switches over the years. The reason I purchased an 05 was because I had the same problem with my 01. I went thru 6 in the last year I had it so I traded it in figuring maybe they have resolved the problem. Its gotten worse. I order them on ebay now 2 at a time so I always have a backup...Thanks Hyundai........And of course the dealer says they don't have any unusual number of cars with this problem. Well guess what, they now stock the switches, which they did not do when I had my first santa fe......amazing huh???
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