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Smart Fortwo 3rd Brake Light Bulb Replacement Guide
How to change a burnt out high mount third brake light bulb on a 2nd generation 2008 to 2014 Smart Fortwo.

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2013 Fortwo 3rd Brake Light
Loosen Counterclockwise
Remove 2nd Screw
This automotive maintenance tutorial was specifically written to assist owners of the second generation (2008, 2009, 2010, 2011, 2012, 2013 and 2014) Smart Fortwo compact city car in changing a burnt out high mount third brake light bulb on the top rear of the vehicle.

Owners of any Smart Fortwo models or trim levels such as the coupe hatchback, cabriolet or "cabrio", electric, pure, passion, forfour, prime and proxy may also find these DIY instructions to be helpful.

The compatible replacement miniature wedge base light bulb is part number 921 (also known as part number W16W).

You can also use a brighter LED unit.

The only tool needed to remove the light housing and access the bulb is a Torx T-10 star bit screwdriver.

Two Screws Removed
Pull Off Light Housing
1/4 Turn Counterclockwise
There are two screws holding the high mount brake light housing in place with one located on the left (driver) side and another on the right (passenger) side.

Remove the two screws by turning them counterclockwise with a small Torx T10 star bit screwdriver.

Set the two screws aside in a safe place.

Gently pull the light housing off the rear of the car and turn it over to access the bulb socket.

Rotate the base of the bulb socket 1/4 turn counterclockwise before pulling it straight out of the housing.

Remove Bulb Socket
Pull Out Old Light Bulb
Push In New Light Bulb
Pull the old light bulb straight out of the socket.

If you have trouble removing the old bulb, try gently wiggling it back and forth while pulling.

Push a new number 921 light bulb straight in to the socket.

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

1/4 Turn Clockwise - Lock
Replace Light Housing
Tighten Two Screws
Re-insert the bulb socket in to the housing and rotate it 1/4 turn clockwise to secure it in place.

Line up the light housing and push it back in to place at the top of the car.

Replace the two screws by turning them clockwise with the Torx T-10 screwdriver.

For more, check out all of my 2008-2014 Smart Fortwo DIY Repair & Maintenance Guides.

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