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blowing 15 amp fuse in starter motor circuit mercedes?

Blowing fuse no52 in mercedes c220cdi 52reg.Fuse diagram says no52 is start enable.I changed 15amp fuse then starts ok for a few days.
today blown fuse 15 amp 3 times,so I put 30 amp in to get me home ,it started ok but I dont want to run with 30 amp in.I dont know if there is a starter relay in circuit causing the problem,the diagram does not list the relays.
Good possibility it's the starter motor ???
Please any help greatly appreciated.

tomg
April 2009

Mercedes Vehicles, Cars 15 Amp Fuse

hi new to this,focus cut out when putting petrol in .changed the cat not the prob new battery on but batt lights up when under 800rpm put foot on accelarater to 2000rpm light goes out taken it for a 5 mile run and light comes back on tested with volt meter and its taking a charge how do i get rid of this problem

sie
December 2009

is it the alternater put new batt on

sie
December 2009

battrey light comes on when idle on 1999 foed focus

sie
December 2009

Its the starter motor cross feeding from postive to negative its best to get it sorted as it causing it to soak up more amps then it should could cause fire within car!

dave mechanic
April 2009