Seat Temperature Element: Service and Repair

Front Seat Heater Mat

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work

Removing the front seat and important information
Remove the front seat. See: Front seat Front Seat.

Caution! Remove the old heater pad before installing the new one. A new heater pad must not be bonded over the old pad.

Note! Read through the entire method before beginning work.





The following heater pad versions are available:
- heater pad and seat belt reminder
- heater pad only
- seat belt reminder only.

Removal

Removing upholstery

Remove:
- the seat cushion upholstery.
- the backrest cushion upholstery. See: Front seat backrest Front Seat Backrest.

Note! Cut the half moon clips. Remove any remaining parts of the clips.

Note! Do not bend the upholstery rods more than is necessary to detach the upholstery. Straighten the rods before reinstalling the upholstery.

Removing heater pad




Carefully heat the heater pad to remove it.





Note! Ensure that the foam filling is not damaged when removing the heater pad. Ensure that the pad is detached from the foam filling. This is to prevent functionality problems when the new heater pad is installed.

Note! Damaged foam filling must be replaced. This to guarantee function. This also applies if there are cracks in the backrest or seat frame.

Installation

Installing heater pads





Caution! The heater pad must be correctly positioned so that when the half moon clips are secured they are not too close to the heating loops or the surface of the heater pad.

Position the heater pad in the correct position. Do not remove the backing from the adhesive surfaces.
Secure one half of the heater pad. Fold up the other half.
Pull the backing (or part of the backing) off the adhesive surface closest to the center of the section of the heater pad that is bent up.
Carefully bring the adhesive surface down onto the foam filling. Work with small sections at a time. Start from the center and work out towards the edges.
Continue in the same way with the other adhesive surfaces.




If the heater pad terminates at the channel, position it as illustrated.

Note! The end of the pad must not be up on the flat surface.




If the heater pad is the type where the pad and/or cable is placed in the channel, the pad must follow the foam filling as illustrated. If not, the pad and/or cable may be loaded and damage the pad. The type of seam on the upholstery may cause wear in the long term.





Caution! There must not be any bubbles or kinks when the heater pad is bonded to the foam filling. This increases the risk of damage to the pad during use. This applies to the entire surface, but to the heating wires in particular.




When the heater pad has been bonded into place the positional straps (gray in the illustration) must be cut apart. This only applies to those types of heater pads that have positional straps.

Note! The positional straps must not be cut before bonding is complete.

Checking bonding




This check can be performed either with the upholstery completely removed or with it partially in position.
Press at those points illustrated. Check that the heater pad follows the compression of the cushion.
There must be no kinks or other defects in the heater pad when it is pressed.

Installing upholstery and front seat

Install:
- the seat cushion upholstery. See: Front seat cushion Front Seat Cushion
- the backrest cushion upholstery.
- the front seat. See: Front seat Front Seat.

Finishing

Test the function of the heater pad
Start the seat heater and check the function.

Note! This check is not possible if the ambient temperature is too high.