Hi. New to this so bear with me. My 156 has been off the road for a while now. Tried to start it yesterday and eventually got it going but battery was flat, so left it ticking over for a wee while. Unfortunately it then overheated! Switched it off for a while but now the code light stays on and the injection light flashes. Also the temperature gauge warning light is flashing though the engine is cold? Have I just killed my car?