This is the 2244th most frequent Turkish word.
aracına
"Aracına" means "to his/her/its vehicle" or "to his/her/its means" in English.
aracına here refers to 'your vehicle' and indicates possession along with the locative suffix.
Arabayla ilgili konuşmayı dinlerken aracına dikkat et.
While listening to the talk about cars, pay attention to your vehicle.
aracına in this context signifies ownership (your friend's) and directs the verb's impact on it.
Arkadaşın aracına otoparkta zarar verilmiş.
Your friend's vehicle was damaged in the parking lot.
aracına aims at 'your means/tools' and metaphorically denotes the resources being relied upon.