.
Posted: Wed Feb 03, 2021 10:22 pm
.
The LCM certainly sounds like a point to start looking. If the system has a fault then it may be keeping the car ‘awake’ so the computers are all drawing power. It’s a quick check by looking to see if the ‘P’ symbol on the gear shift base is going out within 18 minutes. If it stays in the car isn’t going to sleep and that will kill the battery.
It would be worth getting a code read done too as that may show up a fault code.
Any sign of water in the car anywhere? There’s an entry point just below the windscreen on the left side (from the driver’s seat) and also check the area by the battery as a lot of electronics are down there too.