What does the engine temperature warning light mean?

The engine is overheating. Pull over and stop within minutes — driving on warps the cylinder head and can blow the head gasket.

Here's a quick, honest answer from a working UK mechanic — what causes it, what it costs to fix, and what to do next.

Can I just top up the coolant and drive on? — Only briefly to reach a garage, and only if the leak is small. If the gauge climbs again, stop.

Is overheating covered by warranty? — Often yes if within manufacturer warranty, but cooling system neglect (no coolant changes) can void cover.

Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email [email protected].