Check the battery and cold-start essentials
Cold weather reduces battery performance while making a diesel engine harder to turn over. Slow cranking or repeated starting trouble warrants a battery and charging-system test. A battery warning light can indicate a charging fault, not simply an ageing battery. Short journeys and frequent starts can leave a battery undercharged, so do not assume replacement alone will solve the problem.
Fit the battery type and capacity specified for the exact van. Stop-start systems may require AGM or EFB batteries, and some vehicles need the replacement registered electronically. Follow the handbook before jump-starting: connection points and procedures vary, and incorrect connections can damage electronics. If you are unsure, use breakdown assistance rather than experimenting.
Check engine oil level, service history and the manufacturer’s oil specification. The correct approval matters as well as viscosity; do not choose a thinner oil simply because winter is approaching. Once the windows are clear and it is safe to leave, drive gently while the engine warms rather than relying on prolonged idling.
Match tyre condition and pressures to the job
Inspect every tyre for cuts, bulges, embedded objects and uneven wear. Measure tread in several places around each tyre and across its width. For most light vans up to 3.5 tonnes maximum authorised mass, the UK minimum is 1.6mm across the central three-quarters of the tread, around the whole circumference. Requirements differ for heavier vehicles, so check current official guidance for your category. Do not treat the legal minimum as a wet-weather performance target.
Check pressures when the tyres are cold, at least monthly and before a long journey. Falling temperatures can reduce pressure even without a puncture. Use the vehicle’s specified pressures for its current load, rather than a generic figure. Investigate persistent pressure loss or uneven wear.
Winter tyres can improve cold-weather traction, particularly on snow, while suitable all-season tyres offer a compromise for mixed conditions. Neither removes the need to slow down on ice. Consider your routes, mileage and storage arrangements before changing tyres, and confirm the correct size, load rating and fitment with a tyre specialist.
Check coolant, heating and demisting
Check the coolant level against the expansion tank markings with the engine cold. Never remove the cap from a hot cooling system. A falling level needs investigation rather than repeated topping-up. Have the antifreeze protection checked using equipment suitable for the coolant, and follow the manufacturer’s specification for coolant type, mixture and replacement interval. Do not mix products unless compatibility is confirmed.
Test the heater once the engine reaches operating temperature, along with every blower speed and any heated screens or mirrors fitted. Poor heat can point to low coolant, a thermostat problem or a heater fault; missing blower speeds also deserve attention. Air conditioning can help remove moisture when demisting, although operation may be limited at very low temperatures. Keep air intakes clear and check the cabin filter if airflow is weak.
Make visibility part of every departure
Replace wipers that smear, skip or leave uncleared patches. Use screenwash mixed for the expected temperature, following its label; plain water can freeze. Free frozen blades before operating them. Keep a scraper and de-icer accessible, consider an overnight windscreen cover, and never pour boiling water over frozen glass.
Before moving, clear the windscreen, relevant windows, mirrors, lights and number plates. Remove snow that could fall into your view or onto other road users. Check headlights, brake lights, indicators and fog lights, and clean away road grime. Do not leave the van running unattended to defrost: it creates a theft risk and may affect insurance cover.
Use headlights when visibility is seriously reduced. The Highway Code generally describes this as being unable to see beyond 100 metres; fog lights must be switched off when visibility improves. Check current Highway Code guidance for legal requirements rather than relying on a dashboard’s automatic light setting.
Adjust driving to grip, visibility and load
Check the forecast and route conditions before departure. Postpone non-essential travel if conditions are severe. Wet-road stopping distances are at least double those on dry roads, and on ice they can be ten times greater. Increase your following gap accordingly, reduce speed before bends and allow for the effect of your load on handling. Keep cargo secured and within the van’s limits.
Expect ice on bridges, shaded stretches and untreated roads. An outside temperature display is a warning aid, not proof that the road is safe. If grip feels uncertain, ease off the accelerator and avoid sudden braking or steering. In snow, use gentle inputs and a suitable higher gear to limit wheelspin; second-gear starts suit some vehicles, but follow the handbook, particularly with an automatic.
If you become stuck, stop repeated wheelspin. A shovel and grit or sand may help, but do not attempt a manoeuvre that risks sliding into traffic or damaging the van. Call for assistance when necessary.
Carry a winter breakdown kit
Keep emergency equipment accessible and secured, not buried beneath tools or loose in the load area. Check that any jump starter is suitable for your engine and charged. Useful items include:
- Scraper, de-icer, torch and spare batteries.
- Warm clothing or a blanket, drinking water and a snack.
- Charged phone, charging lead and breakdown contact details.
- High-visibility vest and first aid kit.
- Suitable jump-start equipment, plus a shovel and grit for snowy routes.
Use your van’s handbook for specifications, fix starting or visibility problems early, and leave enough time to clear the vehicle and drive to the conditions.