My rear wiper has become very unreliable... Sometimes it works, other times not, and at other times I'll switch it on and nothing will happen for 5-10 minutes and then it will spring into life. The washer fluid pump always works, and when the wiper does works it always covers its full range of motion.

Any ideas? Sticky brushes in the motor maybe?

 

Cheers!

Frayed wire in the rubber boot.

i've got exactly the same problem as you described on a 2009 Mk2.

power seems to be at the 4 pin connector alright.

i've got to double check the green wires based on some threads i read, but brown and black are definitely good. 

 

funny it will work on a cold morning, but not in the afternoon. Presumably after the mrs has been driving.

Did you get to the bottom of your problem?


 

On 18/03/2022 at 19:52, GwaiTsi said:

i've got exactly the same problem as you described on a 2009 Mk2.

power seems to be at the 4 pin connector alright.

i've got to double check the green wires based on some threads i read, but brown and black are definitely good. 

 

funny it will work on a cold morning, but not in the afternoon. Presumably after the mrs has been driving.

Did you get to the bottom of your problem?


 

 

It took a while, but yes!

 

The culprit was the soldering of the little circuit board that controls the wiper motor.

The solder had cracked, causing a poor connection. Makes sense that temperature changes would affect it.

 

Take a look at the attached photos, specifically the soldered tabs on the bottom right of the circuit board. Those two connect directly to the motor.

See how different they look to the tabs at the top of the board? Took a quick bit of heat with a soldering iron and a little extra solder, and problem solved.

 

It's a quick job as long as you have one of those generic trim removal kits.

Just remove the trim from the inside of the boot lid, then the plastic cover from the wiper motor assembly (2 torx screws and 2 metal clips hold it on), and then the little cover over the circuit board comes off easily.

 

Hope that works for your Fabia.

Good work. 

Thanks for the info  - that's helped me fix my rear wiper problem, which had exactly the same fault with the circuit board.