Toyota Prius: Winter driving tips

• Preparation for winter
• When parking the vehicle

Preparation for winter

Carry out the necessary preparations and inspections before driving the vehicle in winter. Always drive the vehicle in a manner appropriate to the prevailing weather conditions.

Preparation for winter

• Use fluids that are appropriate to the prevailing outside temperatures.

• Engine oil
• Engine coolant
• Power control unit coolant
• Washer fluid

• Have a service technician inspect the condition of the 12-volt battery.
• Have the vehicle fitted with four snow tires or purchase a set of tire chains for the front tires.*

Ensure that all tires are the same size and brand, and that chains match the size of the tires.

*: Tire chains cannot be mounted on vehicles with 195/50R19 tires.

WARNING

Driving with snow tires

Observe the following precautions to reduce the risk of accidents.

Failure to do so may result in a loss of vehicle control and cause death or serious injury.

• Use tires of the specified size.
• Maintain the recommended level of air pressure.
• Do not drive in excess of 75 mph (120 km/h), regardless of the type of snow tires being used.
• Use snow tires on all, not just some wheels.

Driving with tire chains (except 195/50R19 tires)

Observe the following precautions to reduce the risk of accidents.

Failure to do so may result in the vehicle being unable to be driven safely, and may cause death or serious injury.

• Do not drive in excess of the speed limit specified for the tire chains being used, or 30 mph (50 km/h), whichever is lower.
• Avoid driving on bumpy road surfaces or over potholes.
• Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations that cause sudden engine braking.
• Slow down sufficiently before entering a curve to ensure that vehicle control is maintained.
• Do not use LTA (Lane Tracing Assist) system.
• Do not use LDA (Lane Departure Alert) system.

NOTICE

Repairing or replacing snow tires

Request repairs or replacement of snow tires from your Toyota dealer or legitimate tire retailers.

This is because the removal and attachment of snow tires affects the operation of the tire pressure warning valves and transmitters.

Before driving the vehicle

Perform the following according to the driving conditions:

• Do not try to forcibly open a window or move a wiper that is frozen. Pour warm water over the frozen area to melt the ice. Wipe away the water immediately to prevent it from freezing.
• To ensure proper operation of the climate control system fan, remove any snow that has accumulated on the air inlet vents in front of the windshield.
•  Check for and remove any excess ice or snow that may have accumulated on the exterior lights, outside rear view mirrors, windows, vehicle's roof, chassis, around the tires or on the brakes.
•  Remove any snow or mud from the bottom of your shoes before getting in the vehicle

When driving the vehicle

Accelerate the vehicle slowly, keep a safe distance between you and the vehicle ahead, and drive at a reduced speed suitable to road conditions.

When parking the vehicle

• Turn automatic mode of the parking brake off.

  Otherwise, the parking brake may freeze and not be able to be released automatically.

Also, avoid using the following as the parking brake may operate automatically, even if automatic mode is off.

• Brake hold system

• Park the vehicle and shift the shift position to P without setting the parking brake. The parking brake may freeze up, preventing it from being released. If the vehicle is parked without setting the parking brake, make sure to block the wheels. Failure to do so may be dangerous because it may cause the vehicle to move unexpectedly, possibly leading to an accident.
• When the parking brake is in automatic mode, release the parking brake after shifting the shift position to P.
• If the vehicle is parked without setting the parking brake, confirm that the shift position cannot be moved out of P.
• If the vehicle is left parked with the brakes damp in cold temperatures, there is a possibility of the brakes freezing.

WARNING

When parking the vehicle

When parking the vehicle without applying the parking brake, make sure to chock the wheels. If you do not chock the wheels, the vehicle may move unexpectedly, possibly resulting in an accident.

Selecting tire chains

• Vehicles without 195/50R19 tires

Use the correct tire chain size when mounting the tire chains.

Chain size is regulated for each tire size.

Side chain:

1. 0.12 in. (3 mm) in diameter
2. 0.39 in. (10 mm) in width
3. 1.18 in. (30 mm) in length

Cross chain:

4. 0.16 in. (4 mm) in diameter
5. 0.55 in. (14 mm) in width
6. 0.98 in. (25 mm) in length

• Vehicles with 195/50R19 tires

Tire chains cannot be mounted.

Snow tires should be used instead.

Regulations on the use of tire chains (except 195/50R19 tires)

Regulations regarding the use of tire chains vary depending on location and type of road.

Always check local regulations before installing chains.

Tire chain installation

Observe the following precautions when installing and removing chains:

• Install and remove tire chains in a safe location.
• Install tire chains on the front tires only. Do not install tire chains on the rear tires.
• Install tire chains on front tires as tightly as possible. Retighten chains after driving 1/4 - 1/2 mile (0.5 - 1.0 km).
• Install tire chains following the instructions provided with the tire chains.

NOTICE

Fitting tire chains

The tire pressure warning valves and transmitters may not function correctly when tire chains are fitted.