Toyota TUNDRA Manual page 581

The starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem:
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. (→P. 582)
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
8-2. Steps to take in an emergency
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