The 75 and ZT Owners Club Forums - View Single Post - Update on wiper issue, may need help of a t4 expert.

HarryM1BYT · 25th February 2015, 18:33

My take on this, is that the wipers can be controlled by either the BCU or directly by the stalk switch.

Either source could be forcing the wiper relays on and the wipers to run.

He suggests he has unplugged the wiper stalk, so that only leaves the BCU generating the 'run' signal, or a fault on the wiring.

He might try unplugging the BCU, after disconnecting the battery, then reconnecting the battery to see what the result is.

25th February 2015, 18:33	#6
HarryM1BYT This is my second home 75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010 Location: Leeds Posts: 17,273 Thanks: 2,160 Thanked 2,061 Times in 1,586 Posts	My take on this, is that the wipers can be controlled by either the BCU or directly by the stalk switch. Either source could be forcing the wiper relays on and the wipers to run. He suggests he has unplugged the wiper stalk, so that only leaves the BCU generating the 'run' signal, or a fault on the wiring. He might try unplugging the BCU, after disconnecting the battery, then reconnecting the battery to see what the result is. __________________ Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money.