ods can the Rear Active Steer system be fully appreciated and safety assured.

COLD WEATHER DRIVING

FREEING A FROZEN DOOR LOCK

To prevent a door lock from freezing, apply deicer through the key hole. If the lock becomes frozen, heat the key before inserting it into the key hole or use the Intelligent Key system.

ANTIFREEZE

In the winter when it is anticipated that the outside temperature will drop below 328F (08C), check antifreeze to assure proper winter protection. For additional informa- tion, see ENGINE COOLING SYSTEMin the 8. Maintenance and do-it-yourselfsec- tion.

BATTERY

If the battery is not fully charged during extremely cold weather conditions, the battery fluid may freeze and damage the battery. To maintain maximum efficiency, the battery should be checked regularly. For additional information, see BATTERYin the 8. Maintenance and do-it-yourselfsection.

DRAINING OF COOLANT WATER

If the vehicle is to be left outside without antifreeze, drain the cooling system, in- cluding the engine block. Refill before operating the vehicle. For details, see

ENGINE COOLING SYSTEMin the 8. Maintenance and do-it-yourselfsection.

TIRE EQUIPMENT

SUMMER tires have a tread designed to provide superior performance on dry pave- ment. However, the performance of these tires will be substantially reduced in snowy and icy conditions. If you operate your vehicle on snowy or icy roads, INFINITI recommends the use of MUD & SNOW or ALL SEASON tires on all four wheels. Consult an INFINITI dealer for the tire type, size, speed rating and availability informa- tion.

For additional traction on icy roads, studded tires may be used. However, some U.S. states and Canadian provinces prohi- bit their use. Check local, state and provincial laws before installing studded tires.

Skid and traction capabilities of studded snow tires, on wet or dry surfaces, may be poorer than that of non-studded snow tires.

Tire chains may be used. For details, see TIRE CHAINSin the 8. Maintenance and do-it-yourselfsection of this manual.

Starting and driving 5-79

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Infiniti S51-D owner manual Freeing a Frozen Door Lock, Antifreeze, Battery, Draining of Coolant Water, Tire Equipment