Hi,
Has anyone seen a false alarm condition on their coolant level sensor? Wondering the best way to fix/repair.

Dealer says the float sensor is stuck or bad and is recommending replacement of the coolant expansion tank assembly for $75. I can get the assy. for about $55 from parts supplier; it looks easy enough to replace. There is also a coolant level sensor available for about $33, but can't gauge how dificult a repair that is.

Question(s): Has anyone else seen this type of failure occuring within a few days of having the Radiator Fan Recal performed? Is this a coincidence or did the dealer cause the problem while performing the recall?

Is there another fix for the problem? Would a simple reset of the condition solve it? How can you tell if the float/sensor is really bad?

How bad is it to replace the coolant expansion tank on your own? (I'm an average to above average mechanical guy, but auto mechanics is not my forte) It looks like three hoses and an electrical plug connection.

Thanks for your help,
--Matt