- Reaction score
Last week in 20 degree F weather I experienced this problem with my '95 SC300 (manual transmission, 223K miles). All electrics worked normally until I turned the ignition key to 'Start'. At that point, the dashboard went dark, as it normally does when the starter motor is cranking the engine, but it did not crank. I removed the key and tried again, probably five times, with the same result - no crank. I had driven the car the previous day, in warmer temperatures, with no problem. I connected a portable jump-start battery device, which made no difference. I was able to get by without the car, so left it sit. When the weather got up into the 40s, it started normally, and has continued to function normally in 40-50 degree F weather. So, it seemed to be cold-temperature related. One suggestion I got was that the anti-theft deterrent system might be malfunctioning. Possibly related, in cold weather the built-in car alarm will occasionally go off when I unlock one of the doors with the key. It goes off when I relock and unlock the opposite door, with the key. Also, I have noticed in sub-freezing weather that the door locks will lock and unlock on their own as I drive down the road. Neither is a big problem, but both are annoying. Are these problems related? Is replacing the anti-theft deterrent ECU an effective solution? Is it practical, considering availability, cost, and diffuculty to replace? Thanks for any help!