Method for activating a vehicle alarm system for lighting up a target vehicle, vehicle alarm system and vehicle comprising an alarm system

A method for activating a vehicle alarm system arranged in a vehicle for lighting up a target vehicle, wherein the vehicle alarm system comprises an alarm signal detection unit, wherein the alarm signal detection unit is configured for detecting an alarm signal of the target vehicle, wherein the method comprises the steps:

• detecting an alarm signal of the target vehicle by means of the alarm signal detection unit upon activation of an intruder alarm of the target vehicle;
• determining an angular direction of the vehicle in relation to the target vehicle and a distance between the vehicle and the target vehicle, upon detection of the alarm signal;
• activating a light source of the vehicle to light up the target vehicle and/or activating a light source of a device associated with the vehicle to light up the target vehicle, when the determined angular direction is within a predetermined angular direction range and the determined distance is within a predetermined distance range.