sunroof motor repair

[andy35554 0]

Like a lot of people on here my sunroof decided to stop playing ball, would not tilt and only slide backwards.

The following took me about 2 hours to complete

You will need a soldering iron, screw driver,torx bits, fine wet and dry, some solvent cleaner and lots of patience!!

 

First of all i greased all the runners and the cables as they needed doing

 

I then dismantled the sunroof switch - this is very fiddly but can be done - once inside i cleaned up all the electrical contacts.

 

Still the sunroof played up

 

Once i removed the motor mechanism from the headling and operated the switch i noticed the motor was not turning, and i could hear relays clicking in the housing.

 

I took these pictures whilst it was back in the car but once the motor mechanism was removed a place it on a workbench for dismantling

Prise the black plastic cover off the circuit board

remove the four screws holding the circuit board in place

You will then see two sets of contacts coming out of the side of the motor onto the circuit board.

Remove the solder

remove the metal cover which has the manual close bit on, using torx type screwdriver

you can see the electrical cut out when you remove this cover, i have shorted it out on the circuit board as it is a real poor connection

the circuit board can now be removed

turn it over and you will see 3 copper coloured relays - using tiny bits of wet n dry you can clean the contacts on the relays.

Now remove the 4 tiny bolts that hold the motor in place.

Remove the motor from the rest of the mechanism, take care not to lose the tiny cog at the drive end

You can remove the metal cover from one end, the other is exposed

inside you will see 2 sets of brushes at either end

slide off the plastic end pieces and you will see the brushes clearly

clean up remove all dirt and wet n dry the end of the brushes.

~The commutator will need cleaning too, thats the bit the brushes rub on, again using wet n dry and solvent cleaner

replace the end pieces forcing the brushes back into the plastic housing with a screw driver to get them onto the copper commutators

put motor end cap on and replace on mechanism.

replace the 4 long bolts

return the circuit board and resolder the motor connections

replace the metal cover over the manual over ride bit

screw in the circuit board and replace plastic cover

connect the wiring back up and check the motor goes both ways

refit to car and align as necessary so the motor stops in the right place, this may mean taking the motor off and on a few times to realign it.