 | Home > In Car Electronics > Heated Seats - Not working |
 
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1768   
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How many wires go into the seat base?
If 2, then I'd expect around 8V on Low power and 12V on high power. If more, then I'd expect 12V on different pins dependent on the power level. |
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10th Feb 2016 12:28am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6635 
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Unplug the seat from the seatbox connector.
With the switch on check the voltage at the connector on the seatbox - should be battery voltage (approx 12V). Take care not to short out the pins when doing this, it will blow the fuse, Check the resistance across the seat connector. Should be a few Ohms (can't remember off the top of my head). Open circuit means a broken heater element, thermal switch or wire inside the seat. I repaired one of the seats I put in my soft top, a wire had snapped inside the backrest. LR factory seats have only 1 setting - On. OK OK or off   1988 90 Td5 NAS soft top
2015 D90 XS SW |
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10th Feb 2016 1:11am |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1768
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And there was me assuming they had low and high like the aftermarket stuff!
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10th Feb 2016 1:42am |
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| Stiff1 Member Since: 09 Dec 2014 Location: Cornwall Posts: 601 
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Thanks all.
Martin, can I assume if the switch is illuminating, inc. the amber light when switched on, the fuses are OK? |
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10th Feb 2016 2:50pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6635
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Correct, the orange "on" lamp won't come on if the fuse has gone. The illumination is separate.
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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10th Feb 2016 3:01pm |
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| Retrostu Member Since: 03 Feb 2016 Location: Kent (AKA Garden of England) Posts: 128 
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Don't mean to hijack your post but my TD5 heated seats have a problem too drivers side not working but passenger does,
Swapped the seat bases round and drivers base does work plugged passenger base into drivers and not working, what gets priority though back part then base or both powered simultaneously? |
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13th Feb 2016 1:51pm |
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| Vanderbult Member Since: 28 Oct 2015 Location: amsterdam Posts: 20  
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did you fix this? i have the same problem
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14th Oct 2016 4:26pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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http://www.defender2.net/forum/topic40052....resistance
and If you go through life with your head in the sand....all people will see is an ar5e!! Treat every day as if it is your last....one day you will be right!! |
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14th Oct 2016 9:26pm |
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| Shax Member Since: 05 Oct 2010 Location: London Posts: 391 
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I had a defective heater on the driver side.. It was caused by a split seat foam insert, that caused the wire to the bi-metallic switch to snap.. Replaced the seat foam, and resoldered the wires.. All OK now.. Just for info, the heater pads in my Puma are 2.5 ohms each, so that makes 5 ohms at 14.4v for the base and back (engine running) that equates to 2.88amps, or 41 watts of heat.... ... ,-------, .. I [__][_]|__ .. I __ |"_|"__| .. "(o)====(o)" ^^_-^-_^-^_^^^^^--^^^^ PAUL G7ALW 14.200 USB 26FB458 / 27.275 SSB |
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2nd Nov 2016 10:09pm |
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