2001 (51 Plate) 115ps Diesel Wont Turn Over

[Whyregister]

Hi,

Parked the car having driven it no problems.

would not start this morning, would not turn over.

key in ignition all the dash lights up and i get the usual single high noted beep and you can hear what i think is the fuel pump (its a sound toward the rear of the vehicle)

glow plug symbol lights turn the key a further step to start nothing happens.

we only have one key and it has the transponder.

i removed the panels and got access to the third layer of relays, no relay 30 but a relay 109, removal of this causes the glow plug light not to light, banging all the relays makes no difference.

checking the solder joints in the realy no problems.

light in door flashes when the car is locked and stops when you unlock with the remote on the key.

after inserting key and turning to the red light goes solid then goes out and waiting a minute of two sees no flashes.

checked all fuses with multimeter.

help !

[gregers]

single beep?,im wondering if your battery needs replacing?