Gerty

2006 E350 4 matic. Blew the top radiator hose while driving. Got the car home as it was only two miles. The car didn't overheat terribly just lost some coolant. I replaced the coolant and hose of course. Now as soon as the car is started the fan stays on at the very high speed. I am guessing the temp sensor puked it when it got hot no? Any thoughts? There are no trouble codes and the visit workshop light is off.

Thanks in advance.