12-13-2012, 11:44 AM
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#1
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Junior Member
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Join Date: Aug 2012
Location: Wild, wonderful...
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Troubleshooting Heated Seat
My wifes '04 Limited has heated seats.
The driver's side works great.
Passenger seat heater does not work.
Checked the fuse...only one for both seat heaters...it's fine.
Any suggestions where to start to diagnose the problem?
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12-13-2012, 11:55 AM
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#2
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Senior Member
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Join Date: Feb 2011
Location: Monroe, North Carolina
Age: 35
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Real Name: Austin
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the other simple thing to check is to be sure the plug is connected securely to the back of the switch.
If your indicator lights up on the switch and the fuse checks out then it's likely in the heater element itself. I haven't read up on to many problems with the heated seats hope you get it figured out.
also be sure the switch connection hasn't had anything spilt on it that could short out the system some how.
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05-15-2013, 07:50 AM
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#3
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Join Date: Jan 2013
Location: FL
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Real Name: Chris
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I'm having the same issue, but my driver's heat seat doesn't work, while the passenger works great. OP have you made any progress on this & have any tips on where to start? The light on the switch works, but the seat isn't getting warm.
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08-29-2013, 06:19 PM
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#4
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Join Date: Jun 2008
Location: North Bay, ON, Canada
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My problem is like that described by cdbsmh ... driver's side seat heater does not get warm, but the light on the switch turns on; passenger side works fine.
I had my mechanic do some troubleshooting for me today while my T4R was in for some service. He traced my problem to the control sub-assembly seat heater (basically the ecu for the seat heater).
Part number is 87501-60010 or 87501-OEO2O. I'm trying to source this now, as my local Toyota dealership wants way too much money for this part.
Part is also used on some other Toyota vehicles and some Lexus models.
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2011 Limited 4WD with NAV: "CDN Package" (running boards, mud guards, all-weather mats, cargo liner, block heater).
Summer: Michelin Defender LTX 245/60R20 on OEM Limited 20" rims / Winter: Toyo Observe GSi-5 265/70R17 on 2018 TRD Off-Road 17" rims.
Previous: 2003 4Runner Limited 4WD V8; 1997 Lexus LS400; 1997 Camry CE; 1988 Celica Turbo 4WD; 1982 Celica GT
Last edited by Bossman; 08-29-2013 at 06:23 PM.
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10-14-2014, 12:25 AM
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#5
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Join Date: Jun 2014
Location: Columbus, Ohio
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Quote:
Originally Posted by Bossman
My problem is like that described by cdbsmh ... driver's side seat heater does not get warm, but the light on the switch turns on; passenger side works fine.
I had my mechanic do some troubleshooting for me today while my T4R was in for some service. He traced my problem to the control sub-assembly seat heater (basically the ecu for the seat heater).
Part number is 87501-60010 or 87501-OEO2O. I'm trying to source this now, as my local Toyota dealership wants way too much money for this part.
Part is also used on some other Toyota vehicles and some Lexus models.
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Did you ever figure out a solution to this? I am having the same issue and would like to get it fixed before Ski season. Thanks!
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10-14-2014, 01:10 AM
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#6
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Got a question. Does the heat pad only heats the bottom seat area or the back area also.
Mines only heats the bottom part. All my other vehicles heated both back and bottom.
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2003 T4R V8 4x4 - FJ coils and dystar leveling kit, Sport wheels painted grey metallic wrapped in Dueler Revo's 265/70/17.
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10-14-2014, 10:47 AM
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#7
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Quote:
Originally Posted by TORCH
Did you ever figure out a solution to this? I am having the same issue and would like to get it fixed before Ski season. Thanks!
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I'm still working on sourcing a used control module from an auto recycler - no way I want to pay my local Toyota dealership's price of $130 CAN plus tax. Not many 4Runners in the auto wrecker lots up my way, though.
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2011 Limited 4WD with NAV: "CDN Package" (running boards, mud guards, all-weather mats, cargo liner, block heater).
Summer: Michelin Defender LTX 245/60R20 on OEM Limited 20" rims / Winter: Toyo Observe GSi-5 265/70R17 on 2018 TRD Off-Road 17" rims.
Previous: 2003 4Runner Limited 4WD V8; 1997 Lexus LS400; 1997 Camry CE; 1988 Celica Turbo 4WD; 1982 Celica GT
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10-14-2014, 10:53 AM
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#8
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Quote:
Originally Posted by bpowa
Got a question. Does the heat pad only heats the bottom seat area or the back area also.
Mines only heats the bottom part. All my other vehicles heated both back and bottom.
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Should heat both.
http://4runnerclub.com/i/4r_files/fs...r/06200210.pdf
__________________
2011 Limited 4WD with NAV: "CDN Package" (running boards, mud guards, all-weather mats, cargo liner, block heater).
Summer: Michelin Defender LTX 245/60R20 on OEM Limited 20" rims / Winter: Toyo Observe GSi-5 265/70R17 on 2018 TRD Off-Road 17" rims.
Previous: 2003 4Runner Limited 4WD V8; 1997 Lexus LS400; 1997 Camry CE; 1988 Celica Turbo 4WD; 1982 Celica GT
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10-15-2014, 03:04 AM
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#9
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Quote:
Originally Posted by Bossman
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i have a 2003 also. maybe the diagram is for newer models?
can anyone else confirm?
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2003 T4R V8 4x4 - FJ coils and dystar leveling kit, Sport wheels painted grey metallic wrapped in Dueler Revo's 265/70/17.
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10-15-2014, 12:16 PM
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#10
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Quote:
Originally Posted by bpowa
i have a 2003 also. maybe the diagram is for newer models?
can anyone else confirm?
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My (factory) 2003 Toyota 4Runner Repair Manual - Volume 2 (page 72-24) shows a front seat heater cushion assembly along with a front seatback heater assembly.
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2011 Limited 4WD with NAV: "CDN Package" (running boards, mud guards, all-weather mats, cargo liner, block heater).
Summer: Michelin Defender LTX 245/60R20 on OEM Limited 20" rims / Winter: Toyo Observe GSi-5 265/70R17 on 2018 TRD Off-Road 17" rims.
Previous: 2003 4Runner Limited 4WD V8; 1997 Lexus LS400; 1997 Camry CE; 1988 Celica Turbo 4WD; 1982 Celica GT
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10-15-2014, 12:29 PM
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#11
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Bossman and Torch, I purchased two OEM heated seats a while ago and never installed them. If you guys want the ECU's I don't mind parting out the seats and selling those, they are just sitting in my garage collecting dust.
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10-15-2014, 01:10 PM
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#12
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Quote:
Originally Posted by who done it
Bossman and Torch, I purchased two OEM heated seats a while ago and never installed them. If you guys want the ECU's I don't mind parting out the seats and selling those, they are just sitting in my garage collecting dust.
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PM sent!
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2011 Limited 4WD with NAV: "CDN Package" (running boards, mud guards, all-weather mats, cargo liner, block heater).
Summer: Michelin Defender LTX 245/60R20 on OEM Limited 20" rims / Winter: Toyo Observe GSi-5 265/70R17 on 2018 TRD Off-Road 17" rims.
Previous: 2003 4Runner Limited 4WD V8; 1997 Lexus LS400; 1997 Camry CE; 1988 Celica Turbo 4WD; 1982 Celica GT
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10-15-2014, 02:41 PM
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#13
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Quote:
Originally Posted by Bossman
My (factory) 2003 Toyota 4Runner Repair Manual - Volume 2 (page 72-24) shows a front seat heater cushion assembly along with a front seatback heater assembly.
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Ok keep me posted on the install. Its odd that both of my front seats only heats the bottom.
The only reason I can think of per the diagram you posted is that a connector is not coneccted to the back portion. But waht are the odds for both seats..:/
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10-15-2014, 03:05 PM
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#14
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Guys,
you know the seat ecu RARELY fails. the seat heater elements usually break before that.
Do yourself a favor. buy a digital volt meter, preferable not the $3 from harbor freight. sears sells a cheap one for $20.
find the connector that goes into the seat coushin. its usually only 2 wires on that connector.
unplug it, take your DVM turn it to ohm setting. press the button to change to beep when it senses conitunity.
basically, the seat heater element is one continous loop. if there is no continuity the seat heater element is broken. thus NOT working.
here is my thread on how to remove replace check etc...lots of pictures too.
http://www.toyota-4runner.org/4th-gen-t4rs/140714-diy-rocking-chair-seat-heated-seat-$0-00-repair-priceless.html
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10-15-2014, 09:17 PM
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#15
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Join Date: May 2014
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Quote:
Originally Posted by gshadow325
Guys,
you know the seat ecu RARELY fails. the seat heater elements usually break before that.
Do yourself a favor. buy a digital volt meter, preferable not the $3 from harbor freight. sears sells a cheap one for $20.
find the connector that goes into the seat coushin. its usually only 2 wires on that connector.
unplug it, take your DVM turn it to ohm setting. press the button to change to beep when it senses conitunity.
basically, the seat heater element is one continous loop. if there is no continuity the seat heater element is broken. thus NOT working.
here is my thread on how to remove replace check etc...lots of pictures too.
http://www.toyota-4runner.org/4th-gen-t4rs/140714-diy-rocking-chair-seat-heated-seat-$0-00-repair-priceless.html
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I do not believe if you check the heating element using the continuity test (beep) will give you the correct results as it checks the circuit for a low resistance. the heating element due to its nature is actually a large resistor and the resistance is what makes it heat up. so when checking with a multimeter use the ohm setting and not continuity(with the beep). you should have high resistance reading, if the meter reads OL or 0 then the heating element has an open and is bad.
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