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I just changed my lower drivers TED with a new one from TASCA Parts, at first when I tried it it shut off after a few seconds, then I pulled apart all of the seat connectors on the bottom of the seat and re-seated them and away she went. Here is a pic showing the old TED with the filter and the new TED that doesn't use a filter.
Turn the heated seat on lights up, fan kicks on few minutes later relay clicks light still on but seat stops working. I can cycle thru the heat setting lights up but relay doesn't click and seat doesn't heat or cool.
I have this same issue. I purchased a new TED from Tasca and hooked it up tonight but not installed. Worked great. I install it and doesn't work just like the original. I hook up the old TED laying loosely in the floor and it works like it's suppose to. I have no idea what to try next.
FOUND ON ANOTHER SITE: The Dual Climate Control Seat Module (DCSM) controls the function of the seat ( heat or cool ) and checks if the temp is too high ( to turn off ) or if a person is in the seat.
OEM SEAT HEATER CONTROL MODULE 2011-2013 FORD LINCOLN
#BU5Z-14C724-A
This may be solution to my problem but at a $100+ for each part this guessing game could get expensive.
My part is floating around in the holiday postal black hole until it gets to me. I found this info while I'm waiting.
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Heated Seats
Vehicles equipped with front heated seats are equipped with a single-heated seat module to control both front heated seats. The heated seat module is located on the passenger seat track. The electronic automatic temperature control (EATC) module includes both driver and passenger heated seat control buttons and indicators. The heated seat system will function independently of the vehicle's climate control system. A momentary ground signal is transmitted to the heated seat module when a heated seat switch button on the EATC module is depressed and ignition switched voltage is supplied. Upon receiving each control signal to an input circuit, the heated seat module will decrease one setting (the sequence is HI, LOW, OFF, HI, etc.). When a heated seat is set to HI, both LED indicators above that heated seat's control button will illuminate. When a heated seat is set to LOW, only one LED indicator above that switch will illuminate. When activated, the heated seat module supplies power to the selected seat's heater circuit. Each seat's cushion heater mat and backrest heater mat is connector in a series circuit to the heated seat module and powered by the output circuit for that seat and ground. The heated seat module monitors inputs from a temperature sensor, located in each seat's cushion heater mat and maintains seat temperature by regulating current flow to the heater circuits. The heated seat module will remain ON until the heated seat switch button is depressed to cycle the heated seat module OFF or a 15-minute time-out period occurs. If ignition power is switched OFF, the heated seat module will enter an OFF state.
Climate Controlled Seat System
NOTE: When installing a new dual climate control seat module (DCSM), it is necessary to carry out programmable module installation (PMI). For additional information, refer to Section 418-01.
Both the driver and front passenger climate controlled seats are independently controlled electronically by the DCSM mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a diagnostic tool to command the DCSM, diagnostic testing can be carried out with the ignition switch key ON engine OFF (KOEO). The system receives power from battery junction box (BJB) fuse 12 (30A) feeding battery voltage on circuit SBB12 (GN/RD) into DCSM C3305a pin F. The system also receives power from BJB fuse 11 (30A) feeding battery voltage on circuit SBB11 (BU/RD) into DCSM C3305a pin E.
If only one of the BJB fuses 11 or 12 open, both seats will remain operational because the power feed circuits are internally connected in the DCSM.
Both climate controlled seats operate independently. If a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.
The 4 switches (identified with seat icons) on the dual-zone electronic automatic temperature control (EATC) module activate each seat system setting and illuminate LEDs above each switch to indicate the operating mode, 3 LEDs for HIGH, 2 LEDs for MED or 1 LED for LOW. The push-buttons with the blue seat icon operate the seat cooling mode and the push-buttons with the red seat icon operate the seat heating mode. The climate controlled seat system is not equipped with auto-mode.
Each driver and front passenger seat cushion is equipped with a thermo-electric device (TED) assembly that includes a seat blower (fan motor, serviced as an assembly with the TED). Similarly, each driver and front passenger seat backrest is also equipped with its own TED assembly with blower. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once the system is activated, the DCSM uses a set of flexible algorithms to control the heating/cooling modes and the blower speed dependant on the EATC seat switch settings.
The TED uses a ''Peltier'' circuit of P-type and N-type semiconductors connected in series using copper electrical conductors. The semiconductors are sandwiched between 2 copper heat exchangers. When current is applied to the TED, one side releases energy as heat, while the opposite side absorbs energy and gets cold. By reversing the current flow, the hot and cold sides reverse.
NOTE: Avoid applying power directly to a TED for testing its operation. Doing so may cause damage to the TED or shorten its usable life.
The temperature differences between the individual heated and cooled settings is minimal. For example, it is difficult to distinguish between LOW COOL and MEDIUM COOL settings. Measuring seat temperature at different settings is possible by monitoring the DCSM PIDs using the diagnostic tool.
The EATC module communicates climate controlled seat commands to the DCSM using the medium speed controller area network (MS-CAN) communication bus. The MS-CAN bus is connected to the data link connector (DLC) for diagnostic use. No direct connection exists between the DCSM and EATC for the climate controlled seat switches. The climate controlled seats can be commanded using the diagnostic tool to verify both module communication on the MS-CAN bus and operation of the DCSM. This method may be useful for isolating a control switch concern. It should also be noted that because CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for additional information concerning CAN bus communication.
I posted this on another thread. Thought it may be helpful here too.
Well my drivers seat cushion finally works. Because of my work schedule and the cold weather I surrendered to the local Ford dealer. The tech took the truck to program my climate control seat module. He tells me that the TED is bad and will need to be replaced. I call BS and said I told the service writer that I had replaced the TED and Control module. He says leave it overnight and he will trouble shoot the next day. I get a call at 8am the next day saying it works perfect. I asked what it took to fix it. He says the TED was overheating and shutting off due to alignment of the TED and seat cushion. I installed it so it's possible. They had charged me $92.00 for programming the module and didn't charge me a dime for the next days trouble shooting.
So???? What was really the failure? The old TED failed and the new one improperly installed? The control module but needing new programming?I have no clue BUT my buns are now toasty. Hope this helps everyone.
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I currently have non-working climate-controlled seats in my 2011 Expedition EL Limited (which I believe is the same system used in the F150) and the dealership appears to be at a loss. They worked perfectly as of December, but would shut off at 15 minutes. I inquired at the dealer as to whether this was normal and they stated it was not. During testing, they experienced a communication error and replaced the DSCM. Since then the seats stay on, but they don't get hot. I took the truck back and this time they replaced all four TED modules. Same problem. They experienced another communication error and opted to reprogram/reconfigure the DSCM. Same problem. Fans on the TEDs come on, TEDs clearly heating up, but seats never reach the appropriate temperature. In fact, the seat bottoms and lower back are so cool (in heat mode) that no one is even certain they're on.
The operations manager came out with me the other day to "prove" to me the seats were working fine. He had a 2010 Expedition EL Limited so we started up the 2 trucks and fired up the seats. Using an infrared thermometer gun, he tested various points on the 2010 and all registered in the mid to high 80s or above. He then tested mine and temps were in the high 60s with a single hot spot towards the back of the seat - presumably where the TED is located. Proven wrong, he now backpedaled and stated that it must be the channels in the seat cushion. However, the problem occurred immediately following replacement of the TED in both seats and both seat backs. Clearly, it's not the seats themselves. He made an empty promise to contact Ford and get back with me "soon," but considering that they had the truck for 4 weeks and got really nasty when I insisted they get the seats working again, I am not expecting a call.
I had the same exact symptoms, 4 trips back and forth fighting with the Ford techs finally had them agree to replace the seat cushion fixing the issue. This happened a year ago and has been working perfectly ever since.
I would've liked to have seen his expression when he looked at the thermostat....
lol. He started frantically aiming the gun everywhere and pulling the trigger faster and faster. He did not look pleased.
Originally Posted by shoman95
I had the same exact symptoms, 4 trips back and forth fighting with the Ford techs finally had them agree to replace the seat cushion fixing the issue. This happened a year ago and has been working perfectly ever since.
I would have considered that a possibility if not for the timing of the problem and the fact that it exists in both seat cushions and both seat backs. I'm sorry I ever asked them to even look into it. I was fine with a 15-minute shutoff, but the Mrs. was complaining.
11-14-2015, 05:06 PM
