heated cooled seat FAIL

[jenk007700]

Guy, anyone have issues with the H/C seats? My drivers side now will not work in either the H or C setting. The dash lights will come on for a minute or so with no fan for the cool or heat then the lights go off and will not activate again. Pass. seat works fine. Any thoughts?

Thanks

 

[SDSHO13]

Have you looked under the seat? I would check all the connectors under the seat, and also check your seat fuse. The owners manual should tell you which one to look at.

 

[SHOrod]

^^^ Agreed. Especially if you have the Easy Exit feature enabled. There have been issues with several model years of Fords having Airbag lights that come on because wires break/connectors unplug after years of the seat moving forwards and backwards from the Easy Entry feature. That's one of the first features I disable on my cars that have that feature.

-Rod

 

[typhoon5000]

I don't think he was referring to the airbag light, but the light that indicates the heated or cooled seat is on. Is it still under warranty? I would just take it in to West Herr Ford and have them take a look at it. I used to work there when I lived in Derby and have lots of friends who still do that will take care of you.

 

[SHOrod]

I don't think he was referring to the airbag light, but the light that indicates the heated or cooled seat is on.

Understood, my point was the thought about wiring issues due to Easy Entry has been a common issue in Fords of years past (even though it was on a different system back then).

-Rod

 

[jenk007700]

No Easy Entry here, seat almost never moves. It is our of warranty so no luck there. I purchased at Towne (worked there some time ago). The console lights come on and the pass works fine so I don't think its a fuse unless both seats are on separate fuses.

Thanks

 

[SHOrod]

What year is your SHO?

-Rod

 

[jenk007700]

2010 Atlantis Green 401 W PP

 

[SHOrod]

I have the factory service manual for the 2010. I'll try to pull up the diagram for the climate controlled seats tonight and see if there's anything that might make sense. There may be a self diagnostic mode as well that could give some insight. Since they shut off early and will not let you reactivate, it seems reasonable that the HVAC will have a code for them, but you'll either need a self diagnostic mode or a professional scan tool to access such diagnostic information.

-Rod

 

[EcoBrick Bob]

Still worth a check of fuses in fuse boxes. Think the manual shows which one.

 

[SHOrod]

Unfortunately the only method discussed in the factory service manual for pulling diagnostics from the HVAC system is via a scan tool. There used to be a sequence of button presses that would enter a self diagnostic mode, but apparently the new system does not have such a feature.

The fuse for the climate controlled seats is fuse F22 (30A) in the Battery Junction Box, hot at all times. This appears to be the only fuse for the Dual Climate Controlled Seat Module.

There are some comments in the service manual that would suggest the driver's seat has an issue that is setting a diagnostic code though:

"Both the driver and front passenger climate controlled seats are independently controlled by the DCSM . The climate controlled seat system only operates with the engine running above 350 rpm, however, if using a scan tool to command the DCSM , diagnostic testing can be carried out with the ignition on and engine off. The DCSM does not time out. The DCSM receives voltage from the Battery Junction Box (BJB) on 2 separate circuits. If one pin does not receive voltage, both seats will remain operational because the voltage supply circuits are internally connected in the DCSM .

"If a fault occurs setting a DTC, only the affected seat will be disabled by the module. If the system shuts down due to a DTC fault, cycling the ignition OFF and then ON again will reset the DCSM to function until the DTC resets."

-Rod

 

[jenk007700]

I will see what I get from the scan tool. Thanks for the info. Seeing as the other seat works fine it rules out the fuse.

Cheers

 

[HighBarSHO]

It also says in the manual that these seats need some form of filter change periodically. It may be shutting off due to clogged filter. Did you check that? Is this a new car?

 

[SHOrod]

That's a worthwhile thought. There is a filter under the seat and one of the possible failure that could cause the system to shut off the seat is due to an overtemp condition. If there was insufficient air flow due to a restricted filter, the module might overheat. Also, if the filter were restricted, it may be blocking the sound of the fan which is why the OP doesn't hear the fan working.

It would be a pretty quick test to remove the filter cartridge and see if the seat works, or at least determine if the fan runs.

-Rod

 

[jenk007700]

but would the filter cause it not to work when only using the heat function? I thought the fan was only for cool?

 

[SHOrod]

The fan is used for both head and cool. Both functions are performed by the thermo-electric device according to the factory service manual. The fan is needed to distribute the heated or cooled air through the seat.

-Rod

 

[jenk007700]

Well news to me. thanks. I assumed the heat was resistance wire.

Cheers

 

[skidooinfront]

Jenk007700 have you fixed this problem. Mine went out last week. Very same symptoms.

 

[jenk007700]

Honestly I have left it be. It comes and goes and for most of the past summer it worked. I think there is a loose connection or frayed wired somewhere. Its not a deal breaker for me and I had a similar issue with an Aviator that cost me a small fortune to diagnose and fix.

If you find anything let me know.

 

[skidooinfront]

my 2011 is doing the same thing. I ended up taking the seat out and looking at all pins and clamps to make sure none were bent. And then taking the blower motor out of the drivers side and hooking it up to passenger side which works fine. And the blower and heater worked. So i am thinking a short mabey under the seat. New part is 140-150 bucks. Would not have helped seeing it worked on the passenger side when hooked up. Damn it.