Heated and cooled seats

The Bodyman · 08-05-2015, 11:41 AM

Hi all.

New here, so here we go,

I have a problem with the drivers heated and cooled seat. When I turn the switch on to either heat or cooling the little orange light comes on for 5 seconds, you just hear the fans are starting up then it switches its self off. To reset and it again. I turn off the ignition, wait for 10 seconds, turn the ignition on again but it does the same thing very time. The passenger side works as it should. Any here had the same problem? I was thinking it might be a thermo switch in the base of the seat?

Jon

Bummer · 08-06-2015, 04:58 AM

Looking at the Service Manual SE section, page SE-45: there is a "Fail Safe" mode. If the system detects for 4 seconds that the thermal electric device sensor is an open circuit, it stops all output and enters the system off mode.

It also mentions a 30 C differential between cushion and back, and temperatures higher than 110 C, but that doesn't seem all that likely in only four or five seconds.

Does either the back or cushion begin to warm up before it stops? Since both have a "TED" (SE-77) I'd start by looking at the one that doesn't begin to warm.

The Bodyman · 08-06-2015, 09:57 AM

Hi Steve.

Just been looking at what you said. Your correct. Its 4 seconds from start to switch off. Nothing get warm on the drivers seat. It doesn't have long enough to get any heat there. You can here the fans start up on low and just before they go onto the next stage, it shuts down.
Would a diagnostic reader find the fault?

I was given this parts number for a the thermo switch in the base: 873D7

Jon

SouthArk370Z · 08-06-2015, 10:37 AM

I doubt that the set heaters will throw a DTC but I don't know that for sure. The FSM usually lists any applicable DTCs.

For troubleshooting purposes, you may be able to bypass the TED to see if things start working. Do not leave TED bypassed as this is a fire hazard.

The Bodyman · 08-06-2015, 10:53 AM

Quote:

Originally Posted by SouthArk370Z

I doubt that the set heaters will throw a DTC but I don't know that for sure. The FSM usually lists any applicable DTCs.

For troubleshooting purposes, you may be able to bypass the TED to see if things start working. Do not leave TED bypassed as this is a fire hazard.

Thanks.

In the UK the roadster wasn't a good seller for Nissan. I think just over 300 odd sold in total. That makes second hand spares like rocking horse poo. So, if it is this switch, I can only buy new from Nissan at a cost of £210.00.
Do you think it might be cheaper as a second hand part in the US? Its not a big item, so postage won't be much.

Jon

SouthArk370Z · 08-06-2015, 03:38 PM

There are several Nissan parts dealers online. Courtesy Parts comes to mind.

If you can find the specs for the TED (temperature setpoint and current rating), you may be able to find a "generic" replacement.

The Bodyman · 08-07-2015, 02:27 AM

Quote:

Originally Posted by SouthArk370Z

There are several Nissan parts dealers online. Courtesy Parts comes to mind.

If you can find the specs for the TED (temperature setpoint and current rating), you may be able to find a "generic" replacement.

Good idea. Didn't think of that.

I doubt if Nissan will give me that sort of information and I'm not sure if the switch itself will show it.

Jon

The Bodyman · 08-07-2015, 02:41 AM

I sent Courtesy Parts an email to see if they can help.

Would any one know of any breakers that may have a 370z roadster in or stock of removed parts?

Jon

The Bodyman · 08-27-2015, 02:43 PM

Switch 1.jpg

This is it. The heating/cooling thermo switch which is giving me grief.

£220 from Nissan. Any got one??

Jon

qubickz · 09-11-2016, 05:22 PM

I have the same exact issue. Did you ever figure out a fix?

08-05-2015, 11:41 AM	#1 (permalink)
The Bodyman Base Member Join Date: Mar 2015 Location: Oxfordshire Posts: 20 Drives: 370z Roadster Rep Power: 10	Heated and cooled seats Hi all. New here, so here we go, I have a problem with the drivers heated and cooled seat. When I turn the switch on to either heat or cooling the little orange light comes on for 5 seconds, you just hear the fans are starting up then it switches its self off. To reset and it again. I turn off the ignition, wait for 10 seconds, turn the ignition on again but it does the same thing very time. The passenger side works as it should. Any here had the same problem? I was thinking it might be a thermo switch in the base of the seat? Jon

08-06-2015, 04:58 AM	#2 (permalink)
Bummer Premium Member Join Date: Mar 2012 Location: Indianapolis, IN Posts: 303 Drives: 13 370Z RTS SR M6 Rep Power: 50	Looking at the Service Manual SE section, page SE-45: there is a "Fail Safe" mode. If the system detects for 4 seconds that the thermal electric device sensor is an open circuit, it stops all output and enters the system off mode. It also mentions a 30 C differential between cushion and back, and temperatures higher than 110 C, but that doesn't seem all that likely in only four or five seconds. Does either the back or cushion begin to warm up before it stops? Since both have a "TED" (SE-77) I'd start by looking at the one that doesn't begin to warm. The Bodyman likes this. __________________ Steve

08-06-2015, 10:37 AM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	I doubt that the set heaters will throw a DTC but I don't know that for sure. The FSM usually lists any applicable DTCs. For troubleshooting purposes, you may be able to bypass the TED to see if things start working. Do not leave TED bypassed as this is a fire hazard. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

08-06-2015, 03:38 PM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	There are several Nissan parts dealers online. Courtesy Parts comes to mind. If you can find the specs for the TED (temperature setpoint and current rating), you may be able to find a "generic" replacement. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

09-11-2016, 05:22 PM	#10 (permalink)
qubickz Base Member Join Date: Oct 2014 Location: Sterling, VA Posts: 17 Drives: 2010 370Z Roadster Rep Power: 11	Same issue I have the same exact issue. Did you ever figure out a fix?

08-06-2015, 09:57 AM	#3 (permalink)
The Bodyman Base Member Join Date: Mar 2015 Location: Oxfordshire Posts: 20 Drives: 370z Roadster Rep Power: 10	Hi Steve. Just been looking at what you said. Your correct. Its 4 seconds from start to switch off. Nothing get warm on the drivers seat. It doesn't have long enough to get any heat there. You can here the fans start up on low and just before they go onto the next stage, it shuts down. Would a diagnostic reader find the fault? I was given this parts number for a the thermo switch in the base: 873D7 Jon

08-07-2015, 02:41 AM	#8 (permalink)
The Bodyman Base Member Join Date: Mar 2015 Location: Oxfordshire Posts: 20 Drives: 370z Roadster Rep Power: 10	I sent Courtesy Parts an email to see if they can help. Would any one know of any breakers that may have a 370z roadster in or stock of removed parts? Jon

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