This is about a friend's 9-5 M2011:
there is a huge battery drain when the car is parked for an extended period of time (like overnight), regardless of if the car alarm is on or off. If the battery is freshly charged, current leakage is next to zero. But several hours later, leakage current springs up to about 6.5 A, several systems turn on: main engine relay, chassis control system, rear differential control module -- and stay on until full discharge of the battery.
Any ideas what's going on?
The info about what happens is from a local mechanic (a very experienced and knowledgable in older models, but not the new 9-5), translation is mine and can be not quite correct.
there is a huge battery drain when the car is parked for an extended period of time (like overnight), regardless of if the car alarm is on or off. If the battery is freshly charged, current leakage is next to zero. But several hours later, leakage current springs up to about 6.5 A, several systems turn on: main engine relay, chassis control system, rear differential control module -- and stay on until full discharge of the battery.
Any ideas what's going on?
The info about what happens is from a local mechanic (a very experienced and knowledgable in older models, but not the new 9-5), translation is mine and can be not quite correct.