Frosty mornings are the number-one time for a no-start. Here is why the cold does it, what to try, and when to call for help.
Why cold weather stops cars starting
A car battery loses a chunk of its power in freezing temperatures, engine oil thickens, and diesel can begin to wax up. Add damp electrics and a battery that was already tired, and a car that ran fine in October simply will not turn over in December.
What to try first
- Turn everything off — lights, heater, radio, heated seats — so all the battery’s power goes to starting.
- Dip the clutch while you turn the key (on a manual) to take load off the engine.
- Try in short bursts of five seconds, not one long crank that flattens the battery.
- If it is a flat battery, a jump start often does it — see our guide on what to do with a flat battery.
When to call for recovery
If it still will not start, or you hear no click at all, do not keep draining the battery. A quick call gets a professional to you fast — jump start at the roadside, or recovery to your home or garage if it needs more. We cover this every winter across the country; see 24/7 breakdown recovery.
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