TL FWD V6-3.5L (2009)
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Entry light control
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Interior lights
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Horns (security and panic)
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Wiper/washer
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Power window
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Power door locks
If the problem is related to one of the following items, go to the troubleshooting for that individual system.
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Gauge control module
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Safety indicators
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Chimes (key-in, seat belt, lights-on, and parking brake)
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Security
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Keyless entry
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Key interlock
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Dash light brightness
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Audio system
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Navigation (if equipped)
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HandsFreeLink
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Immobilizer
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Driving position memory system
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Rear window defogger (climate control)
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Climate control
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Keyless access control
5. Record all DTCs, and sort them by DTC type.
6. Troubleshoot the DTC(s) in this order:
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Battery voltage DTCs.
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Internal error DTCs.
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Loss of communication DTCs.
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Signal error DTCs.
