tow bar electrics

[steve.thomson92]

hi guys nice to be part of a great family first problem ive got which i could do with a bit of help with is the tow bar electrics plug on my e320 derv estate is showing a few faults after plugging in the mot test unit have been told it could be the tow module have tried to find one but i am not having any luck any ideas guys any help would be appreciated regards steve

 

[Druk]

MOT stations mostly use LED testers. These are incompatible with the canbus wiring on your car. You need to get a standard bulb type trailer board and take it to show the MOT guy.

 

[Del80y]

https://www.gov.uk/government/publications/mot-special-notice-04-13

Item 3

As Druk says a common 1 that really by now the MOT stations should be up to speed on
Buy a trailer board for a tenner then use it to hit them with once they have gave you the certificate........

 

[dozypillock]

https://www.gov.uk/government/publications/mot-special-notice-04-13

Item 3

As Druk says a common 1 that really by now the MOT stations should be up to speed on
Buy a trailer board for a tenner then use it to hit them with once they have gave you the certificate........

This is a new one on me. I did not know towbar sockets were tested for an MOT?
I paid a lot of money last year to have towbars fitted to 2 of my vehicles (the ones likely to tow my caravan).
The Merc system cost a lot extra to have the special one programmed etc, compared to the Ford one. The Ford one beeps when indicators are working etc, and I was informed that was a legal requirement.
The Merc one said nothing. I was informed that it will display a warning in comand if a bulb is out? with the expensive reprogramming. I think I will remove a bulb from one of the towed vehicles, and see what happens.

Neil

 

[Druk]

^ It will display if you have a bulb out. Been there....tried it

 

[steve.thomson92]

hi thanks for that very useful info will check it out tomorrow as for the above post by dozypillock the mot can only test a 13 pin euro plug not the old 7 pin hope this helps

 

[Benzowner]

This is a new one on me. I did not know towbar sockets were tested for an MOT?
I paid a lot of money last year to have towbars fitted to 2 of my vehicles (the ones likely to tow my caravan).
The Merc system cost a lot extra to have the special one programmed etc, compared to the Ford one. The Ford one beeps when indicators are working etc, and I was informed that was a legal requirement.
The Merc one said nothing. I was informed that it will display a warning in comand if a bulb is out? with the expensive reprogramming. I think I will remove a bulb from one of the towed vehicles, and see what happens.

Neil

Not 100% sure, but I think it's only tow bars with the 13 pin socket fitted. If you have 7 pin plugs, they are not tested

 

[Merc Owner 2B]

As above although the security/attachment of the 7 pin is tested

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