Heated seats

[Tonyamg]

hi everyone does anyone know if there is a fuse for the heated seats in my b class 2012. Also where it’s located the 3 led lights come on when the switch is activated and decrease gradually but im not getting any heat from either the drivers seat or passenger seat. Is there a relay that operates these if so where is it located.
Any help will be appreciated guys.
Thanks

 

[m80]

Check the fuses, likely under he bonnet,
then check the heaters for continuity.
You can also check for voltage at the heaters, under the seats, for between 5 and 12 volts when powered.

 

[Tonyamg]

Thanks do you know what sort of rating the fuse would be or just check them all.

 

[m80]

Mine just has the one 30amp (green) for both seats, which might explain why both your seats are failing.
But some one may have changed for a different rating, and if lower might explain why it could have blown.

 

[whitenemesis]

Remember the seats don't heat if no one is sitting on them

 

[m80]

I didn't not know that.
Does that mean heavier people get more heat?

 

[richard]

If you do not have memory seats then both seat heaters (on A/B/CLA/GLA) are connected/controlled by the driver's side seat controller. I have some recall it has a fuse for the heated seat part of the controller in the main control fusebox in passenger footwell. I'm sure the Fuse map will tell you which fuse is which - which I'd expect to be in the fusebox .. may be wrong though as its a long time since I've looked for the fusemap in a B class.

Richard