Will may be able to relate to this as some others here. Model 3 12v battery finally dies after 3 years. It's a standard AGM battery that powers 12v things in the car like windows, locks, screen, etc., and it also energizes the high voltage contactors to enable the car to drive. This 12v battery needs a certain amount of voltage to close those contactors or the car is basically dead.
I hooked my 12v ctek charger to the car/battery (ctek manual states clearly there is no need to disconnect battery from car) and selected recondition mode/agm. The battery went through several steps of the charger and powered right back up again. Success! Sort of... The main screen in the Tesla was black, no image, no flicker, nothing. Rebooting the car did not help, everything else worked, car drove fine, just no screen image.
Tesla repair was called to put in a new battery. (It's only $85 so why not...) I crossed my fingers the new battery would magically get the screen working again but it did not. The Tesla tech tried using his laptop for deeper "rebooting procedures" but still no working screen.
I reluctantly ordered a new screen and it arrived 2 days later. When opening the car back up, you could smell an electrical issue! As you looked at the screen, you could see faint whiffs of electrical smoke rising from the back! The screen was quickly unbolted and unplugged. The tech said these screens are made by LG. There was quite the burned component smell from the backside of the screen. A new screen was plugged in and instantly worked again! What a relief there was no further damage!
So what happened? Ctek says they pulse 16V to the agm battery in recondition mode. They say the charger can always stay connected to the car and battery as cars have components designed for this voltage range. But do they? What about the LG screen?? I notified ctek and they wrote back it was absolutely not the charger.
What do you guys think? Would pulsing 16Volts through the car cause a screen component to pop or was this just an expensive coincidence that happened simultaneously with a dead 12v battery? At this point I have the old screen in case later down the line I can get compensated but would love to hear peoples opinions. Oh, and Will, maybe don't try this with your Tesla unless of course you make a video attempting it
I hooked my 12v ctek charger to the car/battery (ctek manual states clearly there is no need to disconnect battery from car) and selected recondition mode/agm. The battery went through several steps of the charger and powered right back up again. Success! Sort of... The main screen in the Tesla was black, no image, no flicker, nothing. Rebooting the car did not help, everything else worked, car drove fine, just no screen image.
Tesla repair was called to put in a new battery. (It's only $85 so why not...) I crossed my fingers the new battery would magically get the screen working again but it did not. The Tesla tech tried using his laptop for deeper "rebooting procedures" but still no working screen.
I reluctantly ordered a new screen and it arrived 2 days later. When opening the car back up, you could smell an electrical issue! As you looked at the screen, you could see faint whiffs of electrical smoke rising from the back! The screen was quickly unbolted and unplugged. The tech said these screens are made by LG. There was quite the burned component smell from the backside of the screen. A new screen was plugged in and instantly worked again! What a relief there was no further damage!
So what happened? Ctek says they pulse 16V to the agm battery in recondition mode. They say the charger can always stay connected to the car and battery as cars have components designed for this voltage range. But do they? What about the LG screen?? I notified ctek and they wrote back it was absolutely not the charger.
What do you guys think? Would pulsing 16Volts through the car cause a screen component to pop or was this just an expensive coincidence that happened simultaneously with a dead 12v battery? At this point I have the old screen in case later down the line I can get compensated but would love to hear peoples opinions. Oh, and Will, maybe don't try this with your Tesla unless of course you make a video attempting it
