Hi, had the same problem with my rear wiper, turned out to be the gears in the motor siezed up, got another motor from a scrapyard £10. all ok now.
Hope this helps.
 
My Disco 300 rear wiper motor is not working any body know where its relay lives?:confused:

Try behind the passenger foot side panel , and as far as I know on Disco 1 the wiper is controlled by the MFU and it doesnt work if a door is open:confused:
 
Had a similar problem with a fried MFU.Second hand unit from Ebay solved the prob
As above if any doors are open the rear wash/wipe wont work and can be confusing:D
 

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