Heated Seats

Ok so my 01' Limited has heated front seats. Drivers side works great. Passenger side does not work. I just get the blinking light when the switch is pressed. Do i have a bad relay or something thanks!

Heated seats are for babies..lol

if you cant find answers on here you might want to try a grand cherokee or libberty forum...not many cherokees came with heated seats

I get my son to start the Cherokee on the cold morings. His big butt warms the seat up just fine.

NO mercy here on heated butt warmers
I'd check the fuses first, then check the wires under the seat and see what they look like, could have had something disconnect the connector. I'd use my eyballs first. I also don't know off hand the heated part, which fuses and such so I can't help there. I assume they are power seats and that they both move normally ?

fspell220 said:

Heated seats are for babies..lol

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You're still lacking in the clever department.

red_01_xj said:

if you cant find answers on here you might want to try a grand cherokee or libberty forum...not many cherokees came with heated seats

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Point taken, but the ZJ/WJ and KJ used a different set of wiring, heaters, etc. from what I remember. Some of the troubleshooting theory may be the same, but there's likely a somewhat different set of underlying causes for the problem.

RichP said:

NO mercy here on heated butt warmers

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Pfft. Read my sig

I'd check the fuses first, then check the wires under the seat and see what they look like, could have had something disconnect the connector. I'd use my eyballs first. I also don't know off hand the heated part, which fuses and such so I can't help there. I assume they are power seats and that they both move normally ?

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If the seats are moving normally, it's not a fuse - the seat heaters were on the same fuse as the seat motors (CB29 - see this thread for the fuse block diagram and key). If the fuse goes, both seats should be immobile and unheated.

My memory from reading other threads on this subject was that a blinking light on the switch indicates heater failure. Whether or not the heater itself is toast (no pun intended) or not may be another matter, however. I'd definitely check the connectors first: this may involve removing the trim piece that the seat switches sit in to get better access to the underseat wiring, but it's not that horrible of a job. Three screws to remove the plastic panel on the side of the seat, followed by a few more on its rear to remove the switches from the panel. I've noticed that my seat switches are getting flaky and need a cleaning; it wouldn't surprise me in the least if the connectors were doing the same thing.

Late edit: found the post that seems to corroborate this, but I'd still check & clean the connectors first - if the easy fix solves the problem, so much the better.

DIAGNOSIS AND TESTING - HEATED SEAT SYSTEM
Refer toWiring Diagrams for the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

NOTE: DO NOT ATTEMPT TO SWAP HEATED SEAT MODULES FROM ONE VEHICLE TO ANOTHER. MOST OF THESE MODULES ARE VEHICLE FEATURE SPECIFIC AND THEREFORE NOT INTERCHANGEABLE. ALWAYS USE THE CORRECT PART NUMBERED MODULE WHEN DIAGNOSING OR REPLACING A MODULE.

HEATED SEAT SYSTEM DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
NO HEATED SEAT SWITCH ILLUMINATION WITH IGNITION ON 1. Faulty fuse. 1. Check heated seat fuse in Junction Block (JB). Replace fuse, if required.
2. Wiring faulty. 2. Check fused ignition switch output (run-acc) circuit from heated seat switch connector to ignition switch. Repair, if required.
3. Ground faulty. 3. Check for ground at heated seat switch connector. Repair, if required.
4. Faulty switch. 4. Refer to Heated Seat Switch for the proper switch diagnosis and testing procedures.
SEATS HEAT, BUT NO HEATED SEAT SWITCH INDICATORS 1. Wiring faulty. 1. Check LED driver circuit(s) from heated seat switch connecvtor to heated seat module connector. Repair, if required.
2. Faulty switch LED. 2. Replace switch with known good unit. If OK, discard faulty switch.
3. Faulty module. 3. Refer to Heated Seat Module for the proper module diagnosis and testing procedures. Replace, if required.
SEATS DO NOT HEAT AND NO HEATED SEAT SWITCH INDICATORS 1. Faulty circuit breaker. 1. Check power seat circuit breaker in Junction Block (JB). Replace, if required.
2. Faulty relay. 2. Refer to Heated Seat Relay for the proper relay diagnosis and testing procedures. Replace, if required.
3. Faulty module. 3. Refer to Heated Seat Module for the proper module diagnosis and testing procedures. Replace, if required.
HEATED SEAT SWITCH INDICATORS FLASHING 1. Faulty sensor. 1. Refer to Heated Seat Sensor for the proper heated seat system self-diagnostic routine. Repair, as required.
2. Faulty element. 2. Refer to Heated Seat Element for the proper heated seat system self-diagnostic routine. Repair, as required.


SELF-DIAGNOSTICS - HEATED SEAT SYSTEM
The heated seat system is capable of performing some self-diagnostics. The following table depicts the various failure modes which will be reported to the occupant via flashing of the heated seat switch Light-Emitting Diode (LED) indicators. Flashing LED indicators on the driver side switch indicate that a fault exists in the driver side portion of the system and, likewise, flashing LED indicators on the passenger side switch indicate a fault exists in the passenger side portion of the system. The LED indicators will flash at a rate of approximately one-half second on, and one-half second off for a duration of one minute. This process will repeat each time an attempt is made to turn the system on with the heated seat switches until the problem has been corrected.

HEATED SEAT SYSTEM SELF-DIAGNOSTIC TABLE
FAILURE MODE SWITCH "HI" LED INDICATOR SWITCH "LO" LED INDICATOR
Shorted Heating Element Flashing Flashing
Open Heating Element Flashing Off
NTC Sensor Value Out of Range Off Flashing

Thanks that was what I was looking for. It works sometimes but mostly it does not. My woman likes the heated seats, as for me I am always hot. As for the jeep they dont build them like they used to. I bought it off the salvage auction for $3700. 2001 Limited, leather fully loaded. 40k. Still smells new. Had to buy a right fender, header panel, and a JCR front bumper for it!
They total stuff for stupid reasons theys days. Ill post a pic tonight.