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2007-2012 Nissan Altima Third Brake Light Bulb Replacement Guide
How to replace the high mount third brake light bulb in a 4th generation 2007 to 2012 Nissan Altima sedan with pictures.

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Third Brake Light Bulb
High Mount Bulb Housing
This automotive "how-to" guide was specifically written to assist owners of the 4th generation 2007 to 2012 Nissan Altima sedan in replacing a burnt out third brake light bulb, also known as the "high mount stop light".

Owners of other Nissan or Infiniti sedans such as the Sentra, Maxima, G25, G35, G37, M35, M37, M56 may also find this guide to be helpful.

A replacement third brake light bulb for the 2007-2012 Nissan Altima is part # 921 from Sylvania and other auto parts manufacturers. Also available are the brighter 921ST SilverStar bulb, the 921LL "long life" bulb and a 921 LED bulb.

The only tool needed to replace the bulb is a small flathead screwdriver. Be sure that the vehicle's ignition switch is set to "OFF" before proceeding.

Gently Pry Up Housing
Lift Up Bulb Housing
Move to the rear seats of the vehicle and use the small flathead screwdriver to carefully pry up the closest edge of the third brake light bulb housing.
1/4 Turn Counter Clockwise
Old # 921 Stop Light Bulb
Turn the white base of the light bulb socket 1/4 turn counter clockwise and pull it straight out of the housing.

Remove the old bulb by pulling it straight out from the socket.

If you have trouble removing the bulb, try gently wiggling it while pulling.


Pull Out Old Bulb
Re-Install Housing
Push in a new # 921 light bulb into the socket, re-insert the socket into the housing, and rotate it 1/4 turn clockwise to secure it in place.

If you would like to have a brighter 3rd brake light, install a compatible replacement 921 LED bulb.

2007-2012-Nissan-Altima-Third-Brake-Light-Bulb-Replacement-Guide-009 2007-2012-Nissan-Altima-Third-Brake-Light-Bulb-Replacement-Guide-010
Test New Light Bulb
Slide the 3rd brake light bulb housing towards the rear window with the far end at a slight downward angle. Then gently pop the plastic tab on the closer side down into the rear deck.

Test the new brake light bulb by having someone step on the brake pedal.

If it doesn't work, try installing a different new light bulb and/or check the brake light fuse.

For more of my maintenance instructions, click on the following links: 2007-2012 Nissan Altima 2.5 S Maintenance Guides, and 2002-2006 Nissan Altima 2.5 S Maintenance Guides.
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