Car winterization checklist

{{whyLabel}}: Ensuring your tires meet 2025 legal standards is critical for safety and avoiding fines.

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• Check for the Alpine Symbol (3-Peak Mountain Snowflake); M+S tires alone are no longer legally sufficient in many regions (e.g., Germany) since Oct 2024.
• Measure tread depth: while 1.6mm is the legal minimum, 4mm is the expert recommendation for winter grip.
• Check the DOT code for age; tires older than 6 years should be replaced regardless of tread.

{{doneWhenLabel}}: You know if your current tires are legal and safe for the 2025/2026 season.

{{whyLabel}}: Batteries lose up to 50% of their power in freezing temperatures, making this the #1 cause of winter breakdowns.

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• Use a multimeter with the engine off.
• A healthy battery should read 12.6V. Anything below 12.4V indicates a weak battery that may fail in a hard freeze.
• Check terminals for white powdery corrosion and clean if necessary.

{{doneWhenLabel}}: Battery health is confirmed or a replacement is planned.

{{whyLabel}}: Winter road salt and conditions make mechanical failures more dangerous; also, overdue inspections carry higher fines in 2025.

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• Look at the round sticker on your rear license plate.
• The number in the center is the year, and the number at the top (12 o'clock position) is the month it expires.
• Note: If overdue by more than 2 months, the inspection fee increases by 20%.

{{doneWhenLabel}}: You have confirmed your car is within its legal inspection period.

{{whyLabel}}: Service centers are often fully booked weeks in advance once the first frost is forecast.

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• Call your local workshop or use an online booking tool.
• Aim for an appointment in October or early November (the 'O to O' rule: October to Easter).
• Request a 'Winter Check' which often includes a professional battery load test and fluid check.

{{doneWhenLabel}}: Appointment is confirmed and added to your calendar.

{{whyLabel}}: Summer fluid freezes in the lines, which can crack the reservoir or leave you blind on salted roads.

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• Look for a concentrate or ready-mix rated for at least -20°C or -25°C.
• Avoid the cheapest options if they have a strong chemical smell that affects cabin air.

{{doneWhenLabel}}: At least 5 liters of winter fluid are ready for use.

{{whyLabel}}: Prevents rubber door seals from freezing shut, which can cause the handles to break or the seals to tear when forced open.

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• Choose a generic silicone spray or a specialized 'Gummi-Pflege' (rubber care) stick.
• Ensure it is water-repellent and designed for automotive use.

{{doneWhenLabel}}: Rubber care product is purchased.

{{whyLabel}}: Worn blades streak across the windshield, which is exacerbated by road salt and low winter sun.

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• Inspect current blades for cracks or 'chattering' sounds.
• Buy high-quality flat-blade wipers (aerotwin style) as they perform better in snow buildup than traditional frame wipers.

{{doneWhenLabel}}: New wipers are purchased and ready for installation.

{{whyLabel}}: Incorrect coolant concentration can lead to engine block cracking in extreme cold.

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• Check your owner's manual for the specific coolant type (e.g., G12, G13).
• Buy a small bottle for topping off if your current level is near the 'Min' mark.

{{doneWhenLabel}}: Correct coolant type is on hand.

{{whyLabel}}: Essential for visibility when road salt creates a white film on the glass.

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• Drain or use up remaining summer fluid first to avoid dilution.
• Fill with the winter-rated mix.
• Run the washers for 10 seconds to ensure the winter fluid reaches the nozzles.

{{doneWhenLabel}}: Reservoir is full and lines are primed with winter fluid.

{{whyLabel}}: Stops doors from sticking in freezing temperatures.

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• Clean the rubber seals with a dry cloth first.
• Apply the silicone spray or rubber care stick evenly to all door, trunk, and hood seals.
• Wipe off any excess to prevent drips on upholstery.

{{doneWhenLabel}}: All exterior rubber seals are lubricated and water-repellent.

{{whyLabel}}: Summer rubber hardens below 7°C, significantly increasing stopping distances.

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• If DIY: Use a torque wrench to tighten bolts to the manufacturer's spec (usually 120Nm for cars).
• If at a shop: Ensure they balance the wheels to prevent vibrations.
• Store summer tires in a cool, dry, dark place.

{{doneWhenLabel}}: Winter tires (with Alpine symbol) are mounted on the vehicle.

{{whyLabel}}: Tire pressure drops by roughly 1 PSI for every 10°C drop in temperature.

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• Check the recommended PSI on the driver's door jamb or fuel filler cap.
• Adjust pressure when tires are 'cold' (driven less than 3km).
• Don't forget to check the spare tire pressure.

{{doneWhenLabel}}: All tires are at the manufacturer-recommended winter pressure.

{{whyLabel}}: Road salt is highly corrosive and can cause rapid rust on unprotected paint and wheels.

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• Wash the car thoroughly to remove all dirt.
• Apply a high-quality hard wax or synthetic sealant.
• Focus on the lower panels and wheel arches where salt spray is most concentrated.

{{doneWhenLabel}}: Car body has a visible water-beading protective layer.

{{whyLabel}}: In Germany and many EU countries, the deadline to switch or optimize your car insurance is November 30th.

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• Compare your current premium against 2026 rates on independent portals.
• Ensure 'Gross Negligence' (Grobe Fahrlässigkeit) is covered, which is vital if an accident happens in poor weather.
• Check if your policy covers 'Marten damage' (Marder), which is common in winter.

{{doneWhenLabel}}: You have either confirmed your current policy or sent a cancellation by Nov 30.

{{whyLabel}}: If you get stuck in a snowstorm or traffic jam, you need to stay warm and visible.

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• Pack a warm blanket, gloves, and a hat.
• Include a flashlight (with extra batteries) and a portable power bank.
• Add high-energy snacks (nuts/bars) and a bottle of water.
• Ensure a high-visibility vest is reachable from the driver's seat.

{{doneWhenLabel}}: Emergency kit is organized in a bag in the trunk.

{{whyLabel}}: Helps you get moving if you are parked in deep snow or slide into a soft shoulder.

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• Place a snow brush and ice scraper in the cabin (not the trunk, in case the trunk freezes).
• Add a small collapsible shovel and a bag of sand or non-clumping kitty litter for tire traction.
• Ensure jumper cables or a portable jump starter are easily accessible.

{{doneWhenLabel}}: Recovery tools are stored securely in the vehicle.

{{whyLabel}}: Winter days are short and visibility is often poor; being seen is as important as seeing.

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• Turn on all lights: low beams, high beams, indicators, and fog lights.
• Check the brake lights by backing up to a wall or having a partner look.
• Clean the plastic lenses of the headlights to ensure maximum light output.

{{doneWhenLabel}}: All bulbs are confirmed working and lenses are clean.