Might be a loose connection .. but not water related. Can still be a broken bulb - the filament is broken but with some vibration makes contact and stays together while riding and lit (warm therefore longer), once switched off cools, shrinks and breaks contact. Buy a spare and see.

Give the sensor and area a good clean before you spend money. Soapy water and a soft brush.

Tried washing it and nothing changes. Red triangle still come son when I engage brake. But think I'll wait until spring as I won't be using the bike over winter.

Thanks for the help.

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You need to have the fault memory read...

Ted

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Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.

GS911 would be a good help.
Have you dropped your bike so that brake liquid is getting low (you cannot check it from a handlebar)…

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www.whereishemuli.eu
Riding round the World

Facebook:WhereIsHemuli

Is your battery ok? Are maybe the wires loose? We had the same problem on the 1150.... and it was the battery.

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http://2livethedream.com

The brake fluid was changed last summer and it's a reasonably new battery, so I doubt it's either of those.

Also, now it's cold, sometimes when I turn it on the computer doesn't recognise the gears. The green N sign doesn't come on so I can't start the thing. I have to kick it up and down the gears a few times until the computer wakes up and the neutral light comes on.

I'm going to take the battery out for the winter and sort it in April. I think it needs a trip to a BMW dealer as there is clearly something going on with the electrics.

Thanks for all the help...

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What are the symptoms when you ride the bike?
Do you have brakes or are you down to residual breaking?
If you have servos on your 1200, you could need brakes to be bled as there may be air trapped in the servos (or low fluid in the servos) which means a trip to BMW to use their vacuum pump to draw the fluid through.
Check levels of servo units - your problem could be caused by low brake fluid in either of the reservoirs under the tank

Check for frayed wires on the loom too- it is a possibility.

Check your front brake light switch isn't sticking on

Check the rear wheel ABS/speedometer sensor- it is located on the rear face of the final drive housing. It is secured in place by a tiny Torx screw. Simply undo the screw, pull out the sensor and wipe it clean of any metal filings, then refit (being sure the o ring seal is intact).

a Hexcode diagnostic dongle- should- IMHO- be part of any BMW owner's tool kit-
What you spend at dealerships will be swiftly recovered and more if you invest in one.
It takes the guessing right out of the equation and tells you if it is a 'side of the road fix' or a 'back of a lorry' time.

It can even give you full real time values and it can send its 'report' direct via your Bluetooth enabled mobile phone to a friendly BMW mechanic back home.
Peace of mind in these complicated electronic days. I might still have my full CD manual ( REpRom) somewhere- pm if need info.

good luck