grayboy64

New Member

• Mar 5, 2016

• #1

My Disco intermittent front wiper only works when it feels like it, and so does the rear. BUT when one works, so does the other. ODD!? I also have a fault with the driver's door light switch. Apparently these two are related. Has anyone had this exact problem?

 

G

goldsie

Member

• Mar 5, 2016

• #2

grayboy64 said:

My Disco intermittent front wiper only works when it feels like it, and so does the rear. BUT when one works, so does the other. ODD!? I also have a fault with the driver's door light switch. Apparently these two are related. Has anyone had this exact problem?

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try replacing the wiper stick, I replaced mine and all is fine Regards Goldsie

 

discool

Well-Known Member

• Mar 5, 2016

• #3

Nope, but replacing the wiper switch stalk will have no bearing on the rear wiper function on, off or intermittently but the mult function unit does the timing/delay functions, so switch on the MFU dianostic program, how to do that is in the Forum already apparently.
Also the feed to the drivers door switch starts at the MFU.

 

grayboy64

New Member

• Mar 5, 2016

• #4

Thanks Discool. Looks like I need to run the MFU diagnostic. My heated rear window, rear fogs and rear and front wipers are playing up, so watch this space.

 

brian47

Well-Known Member

• Mar 5, 2016

• #5

I'd be inclined to check for water damage on or around the MFU too.

 

grayboy64

New Member

• Mar 6, 2016

• #6

discool said:

Nope, but replacing the wiper switch stalk will have no bearing on the rear wiper function on, off or intermittently but the mult function unit does the timing/delay functions, so switch on the MFU dianostic program, how to do that is in the Forum already apparently.
Also the feed to the drivers door switch starts at the MFU.

Click to expand...

I wonder if anyone knows what to do if the MFU doesn't beep.

 

discool

Well-Known Member

• Mar 6, 2016

• #7

grayboy64 said:

I wonder if anyone knows what to do if the MFU doesn't beep.

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Replace it, simples. As I had to back in January 2012

 

grayboy64

New Member

• Mar 17, 2016

• #8

Found a second hand MFU, £40. Installed and all working well now.