300cblkm

HELP ive got a 57 plate 300 c crd estate, had a flat battery jumped it it ran for 2 secs twice now it will not turn over red light on dash Looks like immobiliser has booted me out can anyone advise how to cure this or an independent near Coventry. I removed solenoid wire and with a direct live to solenoid it cranks but will not file up Can I bypass immobiliser or a cure I only brought car on Bank holiday Monday !!!! Im in Coventry if any one can help I would pay