Scantool codes number one. If no codes it is usually fuel, check delivery pressure. Check spark> if no spark and no codes will be immobiliser memory loss in most cases.
SOURCE: alfa romea 147 was ok disconnect battery now
Immobilizer system can be disarmed using 5 digit code from vehicle security card as detailed in owners hand book.
SOURCE: rear hatch open warning on alfa 147
there is a button that is depressed when the hatch closes, it will be located around the edging, analize it to see if it is broken or if wires have come off the back of it. Good luck
SOURCE: to code engine immobiliser on
(1) look behind fuse box (2 x 10mm bolts then ease it downwards), look for black box with green sticker behind fusebox, unplug and replug wires (white plugs) several times, they suffer from corroded connections. (2) wiggle wires around that box and fuse-box. (3) take it to Alfa dealer for check-up, if parts and re-code needed usually around £250.
SOURCE: the horn on my alfa
Have you tried adjusting it, a lot of horns are adjustable, you will find a little screw (usually phillips head) with a small lock nut at base, (not always) loosen nut and turn screw, if it works tighten nut at loudest point, good luck
SOURCE: alfa romeo 147 flashing dasboard
This is so you can set it, just set or reset the time on the clock and it will stop flashing, same thing with the km,move from km to miles and back, if you want km then set to km but if you want miles then go to miles but you must select through it, good day.
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