Hello all - this is my first post on this forum - I've been here a few times in the past as a guest to find answers to various technical troubles with my van. This is the first time I've needed to register and post.
I have an A-Class motorhome based on a Ducato chassis. I've had it since new in 2009. Being what it is I know that a lot of the wiring has been modified from standard. The van gets a lot of use in the summer but is mostly left standing for long periods outside of then.
About three weeks ago the central locking started locking/unlocking all on its own at random times - maybe ten times in one minute and intermittently once or twice an hour afterwards. No flashers happening which does when used with the fob. Did all the usual common-sense diagnostic things like moving the fob out of range, looking at the wiring for obvious shorts etc.
Then a few days ago I switched on the ignition, and the wipers and screenwash came on as well. Stopped when I switched off but came on again once I turned the key.
Then the problem disappeared the next day.
Today it took another turn - three times the exact same thing happened when I switched on - Right hand indicator comes on along with main beam for five seconds or so. Then wipers/water as before.
I hear two beeps from the engine compartment that were never there before when I turn the key.
Now it's stopped happening but expect it will return soon.
My question is about the type of problem this is likely to be - is it likely to be a wiring thing i.e. a short somewhere, a CAN bus thing or something else?
I'm wondering whether there is an underlying problem that is causing both issues? Typing this I can see that it is going to be a job for the auto electrician but would be curious about others' experience.
I have an A-Class motorhome based on a Ducato chassis. I've had it since new in 2009. Being what it is I know that a lot of the wiring has been modified from standard. The van gets a lot of use in the summer but is mostly left standing for long periods outside of then.
About three weeks ago the central locking started locking/unlocking all on its own at random times - maybe ten times in one minute and intermittently once or twice an hour afterwards. No flashers happening which does when used with the fob. Did all the usual common-sense diagnostic things like moving the fob out of range, looking at the wiring for obvious shorts etc.
Then a few days ago I switched on the ignition, and the wipers and screenwash came on as well. Stopped when I switched off but came on again once I turned the key.
Then the problem disappeared the next day.
Today it took another turn - three times the exact same thing happened when I switched on - Right hand indicator comes on along with main beam for five seconds or so. Then wipers/water as before.
I hear two beeps from the engine compartment that were never there before when I turn the key.
Now it's stopped happening but expect it will return soon.
My question is about the type of problem this is likely to be - is it likely to be a wiring thing i.e. a short somewhere, a CAN bus thing or something else?
I'm wondering whether there is an underlying problem that is causing both issues? Typing this I can see that it is going to be a job for the auto electrician but would be curious about others' experience.
. So an update as of this morning. My local Indy garage has identified the BCU as the problem. An attempt to clean the corrosion resulted in the unit packing up altogether so it looks like a new replacement from the main dealer is the only option. An expensive job I'm afraid.