Front seat heated seats won't turn off on 2006 Cadillac Escalade
Heated Seat System Operation
The driver and passenger heated seats have 2 heat zone operating modes with 3 heat level modes and will operate only while the engine is running. The heat zones are determined by which of the 2 heated seat buttons are pressed, while the heat level is determined by the number of times they are pressed. Pressing the seat cushion button 1 time will activate the seat back and cushion heater elements in the high mode. Each time the seat cushion button is pressed the seat back and cushion heat level is reduced from high to medium, low, and off. Pressing the heated seat back button 1 time will activate only the seat back heater element in the high mode. Each time the seat back button is pressed the seat back heat level is reduced from high to medium, low, and off. During heated seat operation the heat zone operating mode may be changed without affecting the current heat level mode.
The heated seat switches are momentary contact switches and are inputs to the driver and passenger door modules. Battery voltage is supplied to the switch assembly from the door module, and when a heated seat switch is pressed and released a brief switch signal voltage is supplied to the door module. Whenever the door module receives an active heated seat switch input, the next heated seat operating mode is determined by whatever the current mode may be. The seat heater elements are controlled by the driver seat module using inputs from the door modules through Class 2 serial data circuit messages. The driver seat module controls the voltage supply and the ground circuits to the seat heater elements. When a heated seat function is commanded active, the seat module will switch battery voltage to the heater element supply circuits, and ground is provided through low side drive control circuits. During heated seat operation both the seat back and cushion heater elements are supplied battery voltage. The seat module grounds the appropriate control circuits for back only or back and cushion heating modes, and opens or closes the active control circuits as necessary in order to maintain the desired seat temperature. The seat module relies on inputs from thermistors located in the driver and passenger seat backs to control heated seat temperatures. The thermistors are 2 wire sensors supplied with a 5-volt referenced signal circuit and a low reference circuit from the seat module. Resistance through the thermistors varies with temperature causing the heated seat sensor signal circuit voltage levels to decrease as the seat back temperatures rise. The seat modules allow heated seat operation only while the engine is running which is determined by a Class 2 serial data circuit message from the powertrain control module.
Heated Seat Components
The heated seat system consists of the following components:
• Driver and passenger heated seat switches
• Driver and passenger seat back heater elements
• Driver and passenger seat cushion heater elements
• Driver and passenger seat back temperature sensors
• Driver seat module
• Driver door module
• Passenger door module
Do you know what B - body DTC -diagnostic trouble code are ?
DTC B2425 Driver Seat Heater Circuit
DTC B2435 Driver Seat Back Heater Sensor Circuit
DTC B3941 Front Seat Heaters Circuit
Heated Seat Always On
Step
Action
Yes
No
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics
Connector End View Reference: Power Seat Connector End Views
1
Did you perform the Diagnostic System Check - Vehicle?
Go to Step 2
Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
Operate the heated seat system.
Does the system operate normally?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
3
Install a scan tool.
Display the Heated Seat Status parameter in the driver seat module Input/Output data list.
Start the engine.
Does the scan tool display the Heated Seat Status parameter as Off?
Go to Step 6
Go to Step 4
4
Display the Heated Seat Mode parameter in the door module Inputs data list.
Does the scan tool display the Heated Seat Mode parameter as OFF?
Go to Step 6
Go to Step 5
5
Turn OFF the ignition.
Disconnect the heated seat switch connector to the door module.
Start the engine.
Does the scan tool display the Heated Seat Mode parameter as OFF?
Go to Step 7
Go to Step 8
6
Replace the driver seat module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Is the repair complete?
Go to Step 9
--
7
Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement .
Is the repair complete?
Go to Step 9
--
8
Replace the door module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Is the repair complete?
Go to Step 9
--
9
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 3
your best bet , have a qualified repair shop diagnose the problem
I have the same problem with my drivers seat heater not working . If anyone has any ideas please send to email below.
Lu
[email protected]
Please help, my wife is complaining!!!
I have the same problem with my 2005 freestyle
I have the same problem in my 2005 Freestyle. I read on one site the soldering joint could have broken, but I don' t know. The guy a the dealer told me either both seats work or they don't, but not just one - so he accused me of having a colder **** than normal people since I said the passenger side still works. If anyone else has a solution, please let me know, because I don't think the mechanic at the dealer knows anything!
Same problem with my 2005 Freestyle
My 2005 Freestyle Ltd recently developed the same issue. Driver's seat heater doesn't heat but passenger side heats fine. Red indicators light on the controls on either side. I would like a probable solution too.
I have the same problem, I brought it in, they replaced the elements and element assembly, still doesn't really work!! After driving for 20 miles, my seat will get "luke" warm. I can barely feel it!!
I have a 2006 Freestyle, and my drivers seat warmer will not work either, but the passenger side works fine.
My 06' freestyle has been to the dealer 3 times trying to correct a lukewarm (not hot) passenger seat, Both heating elements and the temp controller have been replaced, but it still does not get as hot as the driver seat (like it used to be). The last word I received when I picked up my car for the 3rd time was that Ford's reply (to the dealer) was that replacement heaters are not being made to get real hot, because of possible fire danger. Supposedly that is how the seats are/will be in the Lincoln. Check the URL's below concerning heat damage in other Ford cars.
http://www.fixya.com/cars/t649758-driver...
http://www.focusfest.com/forum/showthrea...
2006 Ford Freestyle Limited currently awaiting heating elements to arrive at dealer. Both seats stopped working at approx 76000 miles. Fortunately I have extended warranty that will cover. Other folks have said a TSB is out about this issue. Don't have the number handy.
2005 ford freestlye 40,000 miles had drivers side replaced once- quit wori=king again
I have the same problem, on a 2005, I swiched the modual from under the seat, didn't make a difference, passenger side works driver's side doesn't
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