c36 amg battery drain

[matt-tom]

my brother has a 1995 c36 amg that the battery keeps draining, which is a pain if the car isn't used for a week or so. we have noticed that without the keys in the ignition that when the parking brake is applied the light comes on on the dash(which is not right), could the ignition barrell/switch be faulty or could there be a relay that is stuck on ? i've tried to google it but not found anyone else witht the same issue.

thanks in advance

Matt

 

[BlackC55]

Does the cluster illumination for the mileage stay on too?

 

[matt-tom]

Does the cluster illumination for the mileage stay on too?

off the top of my head i can't really remember but i don't remember it doing it, i'll get my brother to double check tomorrow

 

[matt-tom]

I've just checked with my brother and the cluster illumination does stay on

 

[BlackC55]

Does it stay on after 30 mins when locked?

 

[matt-tom]

I'll get him to check, as he been disconnecting the battery to save it draining all the time

 

[matt-tom]

My brother reckons that the clocks stay in for ages but is unsure how long

 

[matt-tom]

does anyone have any ideas what this could be as it's driving my brother mad ?

thanks

Matt