W210 300td something seriously draining battery any ideas???

[Derekduval]

Hi,
I have an 1999 e300td the car has been fine part from now something is draining the battery really quickly, the battery is only a few months old and I've tested it and its fine

If this is a common problem does anyone have any ideas???
Thanx

 

[dave e320]

boot light switch broken meaning light on all time ?

 

[trapperjohn]

If you have electric seats pull the fuses on them and see if the drain continues.

 

[BlackC55]

aux heater?

 

[BlackC55]

Have you tested the drain? It should be 0.06A and no more.

Is the alternator output ok?