Join Date: Apr 2009
Location: Ipswich, Suffolk UK
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Help Needed - 525d Won't Start??
Ok story goes that this car has been standing for over a year without being started. The cars ignition lights all come on as they should & the DDE light comes on & goes off as it should. The engine will spin over nicely but fails to even try to start. I have checked the fuel pump under rear seats & they seem fine, have checked the pre pump under the passender seat & that seems fine - Fuel is getting to the fuel filter. Had codes read on computer & the only one that showed up was a EWS power fault, so i bought another DDE, EWS module, barrel & key & still fails to even try to fire??
I have also checked the fuses in glove box & again they seem fine - i thinking either HP Pump which i have read about or is the fuel cut off switch/valve stuck that tells the car to fire (if it has one??)
i have now removed the Original Control Box, EWS Module, Barrel & Key from the 525d & fitted to my other car (53 -530d) & it started start away, so i tried the 530d Control Box, EWS & Barrel & Key in the 525d - still won't start. So my conclusion is its not a immobiliser problem.
I did also try un-doing the fuel feed from the HP pump to the common rail to see if any fuel is coming out when its turning over & it doesn't!! So would this suggest the HP pump has gone - or is there a cut off switch somewhere (which could be stuck) which which tell the pump not to work when the ignition is turned off ??
Any help will be gratefully received !!!