Originally Posted by
BCS_ZHP
Yesterday, get to work and park the 540 outside my office in the morning. It's a hot day but not as hot as it has been that 1st week of July. Traffic where I park is minimal, maybe half a dozen cars pass per day. About 3:30, after sitting for over 7 hours, my car alarm goes off. Go out and open the car to turn off the alarm, relock the car and no recurrence. Has anyone ever had this happen?
Called the dealer and described the situation. No definitive answer, the service writer opined that heat waves in the car could have set it off if it was parked in direct sunlight for an extended period -- it was. I had the car tinted at 35% on Monday, thought the tint helped reduce inside temps, I dunno?