This may take a while to explain.Tdi stutters when cold sometimes,other than that it,s driveable.Today it took a while to start (normally on the button ) then cut out. Restarted and it seemed ok,till 1mile down road then oil light flashing and beeping then it juddered to a halt. Restarted ok and that fault hasn,t returned over todays driving (40 odd miles ) but the glow plug light flashed a few times . Done some digging and read about this relay 109 problem,dodgy oil pressure switch,and a dodgy brake pedal switch. Checked oil and its just under max.Driving around with 4 in ,the car hasn,t put a foot wrong this afternoon. Was serviced 4k ago so its not the fuel filter. Would it be worth changing this relay 109 first,and could this relay be linked to stuttering when cold rather than the egr valve ? Would a code reader be of any use with it being a 2001 model ?