tonytouch

HELLO, I notice that my 2013 s550 was low on coolant so i filled it up and bout 3 days later it was low again I was on my way to work and it stared overheating. Got to work checked under the hood no leaks under the hood or underneath. NO leaks on front passenger side near dashboard. Checked rear floor on passenger side and there was is a puddle of coolant on the rear floor car has a front and rear heating and A/C unit. Why is the coolant leaking out the rear?

Racin_fool

possible leak inside the car from one of the coolant lines running under the interior of the vehicle. Maybe something wore its way through one of the coolant hoses or lines.