Hi I recently bought a 2006 ML320. For some reason the back lights don’t want to go off. The indicator light stays on and the reverse lights on both sides. I have unplugged them then plugged them back in but they are still turned on even with no key in or the ignition on. Anyone got any idea how I can fix it? Also the radio screen doesn’t come on. It shows the Mercedes logo then just goes black. Any suggestions on this too? Thanks