Vwbeetle02platenoob

Hello to everyone in this group thank you for accepting my request to join I've recently acquired a 2002 plate Volkswagen Beetle with electrical issues this is something I have no experience of doing but I'm advised to speak to people online to get the best advice on what to do the boot will not open and the immobiliser and alarm kicks in in mind you not put the key ignition straight away is there anything I could do to get this sorted out myself. I've had various quotes to come and sort it out ranging from 50 to £1,500 the car starts the car goes and it stops as it's been delivered by the owner on Friday she has no idea what to do about the electrical issues any advice more than welcome attached is a picture of model if that helps