See also:

Battery Power Protection
The battery saver feature is designed to protect the vehicle's battery. To prevent battery discharge while driving, the following systems are reduced automatically in two stages and then turned off: ...

Battery Replacement
Under normal use, the battery in your remote keyless entry transmitter should last about two years. You can tell the battery is weak if the transmitter won’t work at the normal range in any lo ...

Belts
• Belts may need replacing if they squeak or show signs of cracking or splitting. • Trained dealer technicians can inspect the belts and recommend replacement when necessary. ...