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Fiat 500 Tail Light Bulbs Replacement Guide
How to change a burnt out brake, rear turn signal or reverse bulb in the tail light housings of a 2008-2015 Fiat 500.

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Fiat 500 Tail Light Assembly
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Open Tailgate - Two Screws
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Loosen Counterclockwise

This automotive maintenance tutorial was specifically written to assist owners of the "new" Type 312 (2008, 2009, 2010, 2011, 2012, 2013, 2014 and 2015) Fiat 500 hatchback car in changing a burnt out brake, rear turn signal or reverse bulb in the tail light housings.

Owners of other Fiat, Alfa Romeo, Chrysler, Dodge, Jeep and RAM vehicles such as the 4C, Giulia, 200, 300, Town & Country, Challenger, Charger, Dart, Durango, Journey, Grand Caravan, Compass, Grand Cherokee, Wrangler, Renegade, Cherokee, Patriot, 1500, C/V Tradesman and ProMaster may also find these DIY instructions to be helpful.

Replacement bulbs with their part numbers are as follows: Brake # P21/5W (or 1157), Rear Turn Signal # PY21W (or 7507) and Reverse # W16W (or 921).

The tools needed to complete this procedure include a 10mm socket, a 1/4" drive ratcheting wrench, a plastic automotive panel pry bar and a Torx T25 star bit screwdriver.

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Loosen 2nd 10mm Screw
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Two Screws Removed
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Gently Pry Outer Edge
The first two steps are to open the tailgate door and move to the side of the vehicle with the burnt out tail light bulb.

Locate the two screws on the inner edge of the tail light housing.

They can either be loosened with a Phillips head screwdriver or a 10mm socket with a 1/4" drive ratcheting wrench.

I would not recommend using a Phillips head screwdriver since the screws are made of soft metal that strip easily.

Remove the two screws by turning them counterclockwise and set the aside in a safe place.

The tail light housing is still held in place by two metal pegs or "spikes" on the outer edge of the assembly that act as friction fasteners inside plastic grommets on the rear corner of the vehicle.

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Loosen Friction Fasteners
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Pull Off Tail Light Housing
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Electrical Connector
Gently loosen the tail light housing by prying along the outer edge with a plastic automotive panel removal tool or with a flathead screwdriver covered with a thin micro fiber cloth.

You may need to pry at several places along the outer edge to loosen the two friction fasteners.

Pull the tail light housing straight off the rear corner of the vehicle.

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Pry Back Retaining Clip
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Pull Off Power Plug
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Brake - Turn - Reverse
Gently pry back the retaining clip on the electrical connector before sliding the power plug straight out of its socket.

Turn over the tail light housing to access the bulb sockets.

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Loosen Counterclockwise
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Torx T-25 Screws
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Four Screws Removed
To remove the bulb socket bracket from the rear of the tail light housing, you'll need to loosen the four Torx T-25 screws by turning them counterclockwise.

Set the four T25 screws aside in a safe place.



 

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Pull Out Bulb Bracket
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Tail Light Housing
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Bulb Sockets Accessible
Gently pull the bracket off the rear of the housing and turn it over.
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Push Down & 1/4 Turn CC
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Install New Turn Signal
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Push Down & 1/4 Turn CC
Push the old rear turn signal light bulb down in to the socket and rotate it 1/4 turn counterclockwise before pulling it straight out.

Push a new amber colored # PY21W bulb down in to the socket and rotate it 1/4 turn clockwise to secure it in place.

Push the old brake light bulb down in to the socket and rotate it 1/4 turn counterclockwise before pulling it straight out.

Push a new # P21/5W bulb down in to the socket and rotate it 1/4 turn clockwise to secure it in place.

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Pull Out Old Reverse Bulb
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Push In New # 921 Bulb
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Lower Bulb Socket Bracket
Pull the old reverse light bulb straight out of the socket.

Push in a new # 921 or W16W bulb down in to the socket.

Turn over the bulb bracket and lower it down on to the rear of the housing.

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Push Back In Place
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Tighten T25 Clockwise
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Push In Electrical Connector
Re-insert the four T25 screws and tighten them in the clockwise direction.

Hold the tail light housing near the rear corner of the vehicle and push the power plug back in to place.

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Line Up Metal Pegs
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Push On Tail Light Housing
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Spin In 10mm Screws
Line up the metal pegs on the back of the housing with their corresponding grommets on the rear of the car.

Push the tail light housing back in to place.

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Re-Insert 2nd 10mm Screw
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Tighten Clockwise
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Tail Light Bulbs Replaced
Spin in the two 10mm screws and tighten them in the clockwise direction until they are snug.

Try to avoid over tightening the screws to prevent from cracking the plastic inner edge of the housing.

Test the new tail light bulbs by having someone step on the brake pedal, activate the hazard signals and place the transmission in reverse.

For more, check out my other 2008-2015 Fiat 500 DIY Repair & Maintenance Guides.
 

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