This video helped me diagnose my Seat Heater issues on my V70XC. I hope it’s ok that I mentioned you in my video and included a link to this video in my video description. kzfaq.info/get/bejne/otZlg92IvJ3ddqs.html

Thanks for sharing! I got my seat fixed today following your method.

Great video. Worked on my Volvo v70 same problem, different location. Still some questions...

Great video. I managed to fix the seat heating, traced to 2 broken wires bin a loom. Still had to do calibration in Vida.

+SiRobb, I suppose my point was that, since agricultural stores sell these pretty cheap, they're worth buying "if" you plan on reupholstering the seat & or properly replacing the foam yourself. I suppose if you're a farmer like myself, they are a multi-purpose tool; pigs & car seats.

Time has come to fix drivers side, did simple diagnosis like in this video and came up with no continuity in bottom heater pad. Seat out, cover off and found burned off wire in left section. I Think burning off is caused by getting in getting out munching of the side of the seat, which leads to actual folding of heater pad. Then wire gets tangled in himself, heats up and burns off. Thats what happened in my situation. First try: tried connecting wires with simple wago 2way wire connector, which is all plastic. WRONG, dont do it. Seat heating maybe worked for the first 10second but no more. Next day checked for continuity in bottom heater pad- nothing. Seat out, cover off, and found this plastic wago connector all melted to one solid piece. Now wires are crimped with solid connection with wire crimper and seat heating is working since. Just my expierence. By the way: Doors shut, then open the trunk and wait until trunk light turns off, then disconnect the battery. It takes about 10minutes for it to shut off and its enough not to get SRS light on your dash. For V70 P26 at least.

Great instructions. Thank you.

+SiRobb, Since I grew up on a farm, I know that most agricultural stores sell hog rings & the hog ring pliers. They're fairly cheap. The pliers have notches to hold the rings while you squeeze them closed. However, with conventional pliers, applying the hog ring is more like a balancing act; close the ring before it turns sideways in your pliers.

Nice video..I have 06 Suburban--heated seat switch lights as long as you hold it but goes out as soon as you release it (both driver and passenger). Fuse is not blown--any advice?

Well done well explained 👏

That was great thank you from Canada jack

very nice diagnostic video tx !

nice guide. very helpfull

Hi Sir Rob! On my wifes v40 2013 I did exactly what you do in the video. It has the same “form” like the old volvos. So I tried to do some resistance measuring and my multimeter beeped when it has no problem, the seat pad did not beep and zero ohm. I assume that the wire totally broke. I also did a module change from the working passenger seat, no result. If i understand correctly, if one of the pad is bad the module fully stops the heating on the good pad also. Am I correct? (Could not measure any outgoing voltage under heating program. On the passenger side I got 5-9 volts constantly.) I guess i have to replace the pad 😅. Thanks!

Does the Audi a4 avant 2005 have the same ? mine dnt work

it was really helpfull. thanks !

Thank you for this. Neither of my seat heaters work in my 02 V70. I checked voltage going in to controllers and it was good. Output was a different story though. On both sides only one of the two connectors showed voltage and it was steady at 1.2V. The other showed nothing. I’m guessing both modules have gone bad.

My dash board shows everything is working, heated & cooled seats on the dash are on. Still no heat or cooled feeling coming to both front seats. Any insight would be appreciated, what do you suggest? I have no burnt connections.

Hi! Is it possible to use this in Saab 9-3 2008? It feels Im burning in some place. Also i have o hole in the seat. To the left down corner! Thanks! = )

My car is a 2004 Cadillac with the heated seats not working. The lights come on at the switches, but the module under each seat wil make a clicking noise about every 10 seconds. I just bought the car used so not sure if they went out at the same time or not. Does this sound like the modules under the seat are bad, or something else. Thanks.

Thank you for this video. I will check soon my seat. I have 07 S60 and in fact I have issue that you said can't happen, my passenger seat heats only back, not base.

hi i am trying to fit the xc70 seats in a van but i am unable to find out what signal voltage is required from the car to the module down to activate both seat and back heater if you are able to help it would very much appreciated

Hello, I also tried to fix the heating in the driver's seat, I soldered the wires where they were broken and now I get a resistance of 2.5 ohms, is it OK? Or do I have to look somewhere else if it's still broken? Thanks.

Hello man, thank you for explaining, module on driver seat is bad how i diagnosed, it has 15 volts input and outputs 0 on both pads, i will try to replace it with passenger seat module to see will it work.. Is it normal to have 15 volts to module? Maybe it went bad because od high voltage?

@SiRobb i have checked pads resistance is around 0.5 ohms, but it is rising by time and going over 1 ohm, voltage on module is 15 volts and outputs on pads are 0, tried switching the modules with passenger seat one and its not working, how do i know wich pad is bad and needs replacement?? Its Volvo V40 2013.

Hi SiRobb, Thank you for the video and the really good explanation! I checked both seats today and got the following results: both seats get ~12-13 volts. Resistance is fine with all pads. Module 1 outputs 0 volts on both pads. Module 2 outputs 3.7 volts and ~8 volts. Module 2 installed in the other seat shows the same voltages (3.7 volts and ~8 volts). The recommendation is probably to order two new modules, right? Thank you very much!

Hello ! I want to ask you, if you can me give the advice. Does fit the driver's seat from V70 manufactured 2001 to V70 manufactured 2004 ? And is it necessary after replacement to remove fault's report of the memory ?

I know this is an old post but when you showed the Burnt wire it still looked like the wire was unbroken? If it were unbroken what would be the reason to cut it and put the ceramic piece in just to reconnect the wire back to it? As I said the wire wasn’t even broken so I am not sure how the part changed anything

My Lexus seat heater light comes on but the heater is not working for either the driver or the passenger. Could I have a faulty relay rather than a problem with the heater itself?

Thanks

It's a shame these heated seats fail :(. Our mechanic is fixing ours soon! I'm guessing it'll fix the bottom but not the backrest heated seat

Hi! Will this work on a Volvo C30? My drivers seat heater doesn’t work at all! I checked the fuses and they seem fine so I’m guessing this could be the issue ?

@SiRobb Nice one, but I have a puzzle for you. When I take a good working module from passenger's seat and put it on to a non-working one it suddenly stops showing any voltage on the plugs going to heat pads (small grey and green plugs) as if it was broken. And the other way round - allegedly broken module becomes fully operational on a previously working seat, starts feeding voltage to pad plugs. What would be the reason for that? Thermostat in a non-working seat? Is there a way to test it with a multimeter?

Great video, I have the v70 and my heated seats are slow to heat but will eventually heat on both sides. Should I be looking at the CEM or do you think the problem is my modules?

My heated seat in 07 silverado comes onext when I start it and I have to turn it off and then it comes on onew it's own

What did you do besides cutting the cable and putting it in a connector?

Hi great video by the way. Quick question. Does the seat heater module control the air vents for that specific side. I.e. drivers side SHM failing therefore the air vents not giving cooled air while ac is on ? I've read on a forum about the above. My issue is the driver side always spits on warm air despite changing the control while the passenger side varies with control with or without AC on. Any would be appreciated Thanks in advanced

Hey was wondering if you can help me the heated seat in my Audi a1 drivers seat is acting way different from the passenger side I have tried both, the passenger side heats up supper quick and gets really worm where as my drivers one takes ages to heat up and doesn't get as worm any ideas what this might be ? Thanks

Dear SiRobb I need your help and explanation. There are 3 wires, tho bigger size (RED and BLACK) and one yellow between them. Could you be so kind to tell what is the yellow wire in main power seat heating harness for.

Hey nice video. my connector White the 2 wires show 1.1 ohm and send 12 volt out .. and i get a fault. drivers seat signal to low ? Do you know what that could be.

So did you just clean it up, cut the wire and connect using ceramic block?

This is not the video that was referenced on the main link. It said 2005 Impala.

My drivers side seat stopped heating up followed by the passenger side a week or so later. Surely it’s too much coincidence that wires have broken in both 🤔 I’ve replaced both fuses but no change. Vida says “Right heater pad, faulty signal” and “Seat heater left, low signal” Both switches illuminate when pressed.

Sounds a bit complicated. The heated seats in my MX-5 stopped working and it was freezing cold so I just punched the centre console really hard and they started working again.

Nice video! On my S60 the right side of my buttocks becomes very hot whenever i have the seat heater on. Could it be the same issue as you had?

My wont turn on, buttons dont light up what it can be, fuse are ok

Hi, im experiencing the same problem, seat pad doesnt work but i dont meassure anything, zero. What can be the cause? The seat back seem to be fine

HI....CAN YOU TELL ME THE NAME OF THE PART AND WHERE CAN I BUY IT PLEASE?

error causes the following error CEM-5B01

Can't you just solder those two wires together?

man you take forever to explain. good explanation but took way to long

splice it, no soldering, then heat shrink. This terminal bs under the seat is not going to last