The first properly cold morning of the year is the busiest day in recovery, every year, without fail. Almost all of it is the same handful of faults, and almost all of it is avoidable in an afternoon.

DK’s Recovery covers Sheffield and South Yorkshire 24 hours a day through the winter for breakdown recovery and jump starts. Call 07867 860723.

The battery, first and always

Cold cuts the current a battery can deliver at precisely the moment a cold engine needs more of it. A battery that has been slowly weakening all summer works fine until the first hard frost and then does not.

Most garages will test one free in two minutes. If yours is over five years old, or the car has been cranking slower than it used to, get it checked in October rather than discovering it in December. Our guide to a flat battery covers what to do if you are already too late.

Short journeys make it worse. A ten-minute run to the shops with the heater, lights, wipers and heated screen all drawing power takes more out of the battery than the alternator puts back.

Tyres, and why pressures drop on their own

Air contracts as it cools, so tyre pressures fall without any leak — roughly a tenth of a bar for every ten degrees the temperature drops. Check them cold, monthly, through the winter.

Tread matters more in the wet and cold than at any other time. The legal minimum is 1.6mm across the central three-quarters, but grip falls away well before that; 3mm is a far more sensible point to replace. On Sheffield’s hills that is the difference between pulling away and not.

The fluids that catch people out

Screenwash. Plain water, or a weak mix, freezes in the bottle and the jets. You then have no way to clear road salt from the windscreen, which on a low winter sun is genuinely dangerous. Use a proper concentration, not a splash.

Antifreeze. Coolant should be a correct mix, not topped up with water all summer. Weak coolant can freeze, and freezing coolant cracks engine blocks.

Diesel. It does not freeze but it can wax, where the paraffin in it crystallises in severe cold and clogs the filter. UK winter blend is treated for normal conditions, but a car standing outside through a hard frost can still be caught.

The other seasonal one is water rather than ice. Our guide to driving through floodwater and what to do if the car cuts out explains why restarting it is the expensive mistake.

The roads west of Sheffield

The Snake Pass and Woodhead are the ones to think about. Both climb onto exposed moorland, both close in snow, and both have long stretches with unreliable phone signal. They are also the roads people take a chance on because the city looked fine when they set off.

Before crossing in poor weather, check whether the road is open. If conditions turn while you are up there, turning back early is almost always better than pressing on.

If you get stuck in snow

  • Stay with the car unless somewhere safe is close and clearly reachable on foot. A vehicle is shelter and it is far easier to find than a person.
  • Keep the exhaust clear of snow. A blocked tailpipe can push exhaust gases into the cabin.
  • Run the engine intermittently for warmth rather than continuously, and keep a window slightly open when you do.
  • Make yourself visible — hazards on, interior light on if you can spare the battery.
  • Give the clearest location you can: road number, direction, last landmark or junction you passed.

What to keep in the car from November

None of this is dramatic and all of it helps: a charged phone and a cable, a warm coat and a blanket, proper shoes, a torch, a scraper and de-icer, water and something to eat, and any medication you take daily. Add a shovel and a high-vis if you cross the moors regularly.

The most useful item is the phone cable. Almost every winter call-out involves someone whose battery is nearly dead in more than one sense.

Ten minutes in October

Battery tested. Tyre pressures and tread checked. Screenwash to full winter concentration. Coolant checked. Wipers replaced if they are smearing. Lights all working.

That is most winter breakdowns prevented, and it costs less than one call-out.

Common questions

Why do so many cars fail on the first cold morning?

Cold reduces the current a battery can deliver at the exact moment the engine needs more to turn over. A battery that has been quietly weakening through the summer copes until the first hard frost and then fails on the driveway – which is why the first properly cold morning is the busiest call-out day of the year.

Do I need winter tyres in Sheffield?

Not legally, and most drivers manage without. They make a real difference on the hills and the Peak District roads if you have to be out in bad weather. If you stay on winter tyres, 3mm of tread is a sensible minimum rather than the 1.6mm legal limit.

What should I do if I get stuck in snow on the Snake Pass?

Stay with the vehicle unless you can see somewhere safe and close on foot. Keep the exhaust clear of snow, run the engine only intermittently for heat, and call for help with the clearest landmark you can give. Both the A57 and A628 close in bad weather, and walking off the moor in a blizzard is far more dangerous than waiting.

Can diesel freeze?

It does not freeze, but it can wax – the paraffin in it starts to crystallise in severe cold and clogs the filter, so the engine starves and stops. UK winter-blend diesel is treated for typical conditions, but a car parked outside for days in a hard frost can still be affected.

What should I keep in the car in winter?

A charged phone and a cable, a warm coat and blanket, sturdy shoes, a torch, a scraper and de-icer, some water and something to eat, and any medication you need. If you regularly cross the moors, add a shovel and a high-vis.

Is it worth getting the battery tested before winter?

Yes, and most garages do it free in a couple of minutes. It is the single cheapest way to avoid the most common winter breakdown there is.

Caught out this winter?

We are out in it 24 hours a day, including the days when nobody else is. 07867 860723.