Photosensors
The mirror has a photosensor attached on the front and back sides. During nighttime driving, these sensors detect distracting glare from vehicle headlights behind you and automatically dim the mirror to eliminate glare and preserve your vision. For this reason, use care not to cover the sensors with stickers, or other similar items. Periodically wipe the sensors clean using a piece of dry soft cotton cloth or an applicator.
See also:
Displaying radio PS (Program Service Name) and RT (Radio Text)
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Brake booster
The brake booster uses engine manifold
vacuum to assist braking force. Do not
turn off the engine while driving because
that will turn off the brake booster, resulting
in poor braking power.
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Parking on a grade
Always block the wheels under both vehicle and trailer when parking. Apply the
parking brake. You should not park on a hill or slope. But if parking on a hill
or slope cannot be avoided, you shoul ...