Window switch not working - Skoda Fabia 2012

[Largechris]

Hi, friend has a Skoda Fabia from about 2012.

The drivers side and passenger side window doesn't work, the driver has a switch for both driver and passenger windows, neither works.

However the passenger switch for their window does work.

So I'm confused - if it was a fuse neither window would work, if it was the drivers switches why would both fail at the same time?

Cheers

[Pica-Pica]

Can the passenger side switch be swapped to the driver’s side passenger window location? If so, does it still work?

[donkmeister]

Largechris said:

Hi, friend has a Skoda Fabia from about 2012.

The drivers side and passenger side window doesn't work, the driver has a switch for both driver and passenger windows, neither works.

However the passenger switch for their window does work.

So I'm confused - if it was a fuse neither window would work, if it was the drivers switches why would both fail at the same time?

Cheers

The switch communicates with the rest of the car by CANBus or similar even in a 2012. So, think of each switch unit as a separate module. If the driver's side module isn't communicating with the bus, the passenger one still could be.

Automotive electronics is all just finite state models, at least that was what my UML training told me

[Krikkit]

donkmeister said:

The switch communicates with the rest of the car by CANBus or similar even in a 2012. So, think of each switch unit as a separate module. If the driver's side module isn't communicating with the bus, the passenger one still could be.

Indeed, had exactly the same fault with a Mk6 Golf, turned out to be the driver's door module.

[Largechris]

Ok thanks, so, er, WD40 on the connector or a new module then?

[E-bmw]

Largechris said:

Ok thanks, so, er, WD40 on the connector or a new module then?

Er, no.

WD will do nothing to get an electronic unit working.

You need a new/tested second hand one.

[Krikkit]

Largechris said:

Ok thanks, so, er, WD40 on the connector or a new module then?

Replace the module - I found a used one by matching the part numbers, worked a treat.