To Prevent The Water Damage; When You Drive Through Water; Inspection After Off-Road Driving - Toyota RAV4 Hybrid 2018 Service Manual

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4-6. Driving tips
NOTICE
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To prevent the water damage

Take all necessary safety measures to ensure that water damage to the
hybrid battery (traction battery), hybrid system or other components does
not occur.
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Water entering the engine compartment may cause severe damage to the
hybrid system. Water entering the interior may cause the hybrid battery
(traction battery) stowed under the rear seats to short circuit.
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Water entering the hybrid transmission will cause deterioration in transmis-
sion quality. The malfunction indicator may come on, and the vehicle may
not be drivable.
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Water can wash the grease from wheel bearings, causing rusting and pre-
mature failure, and may also enter the hybrid transaxle case, reducing the
gear oil's lubricating qualities.
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When you drive through water

If driving through water, such as when crossing shallow streams, first check
the depth of the water and the bottom of the riverbed for firmness. Drive
slowly and avoid deep water.
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Inspection after off-road driving

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Sand and mud that has accumulated around brake drums and around
brake discs may affect braking efficiency and may damage brake system
components.
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Always perform a maintenance inspection after each day of off-road driv-
ing that has taken you through rough terrain, sand, mud, or water. For
scheduled maintenance information, refer to the "Scheduled Maintenance
Guide" or "Owner's Manual Supplement".
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