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Ford Expedition Reverse Tail Light Bulbs Replacement Guide
How to change a burnt out reverse bulb in the tail lights of a 4th generation 2018, 2019 & 2020 Ford Expedition.

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Pry Off Trim Cover
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Trim Cover Removed
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Two Nuts Exposed
This automotive maintenance tutorial was specifically written to assist owners of the 4th generation (2018, 2019, 2020 and probably also the 2021, 2022 and 2023 model years) Ford Expedition SUV in changing a burnt out reverse (or "back-up") light bulb located in the tail light housings.

Owners of other Ford or Lincoln vehicles such as the Explorer, F-150, Escape, EcoSport, Transit, F-350, F-250, Edge, Flex, Ranger, Fiesta, Focus, Fusion, Mustang, Bronco, Super Duty, Navigator, Continental, MKZ, MKX, MKC, MKT, Aviator, Corsair and Nautilus may also find these DIY instructions to be helpful.

The compatible replacement reverse light bulb part number is 3057 (also known as 3057K) which is available from various manufacturers such as Sylvania, Philips, Bosch, Eiko and Wagner.

If you would like to have brighter reverse lights that will also last a lot longer before burning out, install some 3057 LED bulbs.

The tools needed to access and replace the bulbs include a plastic pry bar tool, a 10mm socket and a 1/4" drive ratchet.

The first two steps are to open the tailgate door for the cargo area and move to the side of the vehicle with the burnt out reverse light bulb.

(The brake, rear turn signal, parking and side marker lights are all LED bulbs that should last the life time of the SUV.)

Use the plastic pry bar tool to gently pop the black plastic trim piece on the inner edge of the tail light housing. The trim cover is held in place by three metal clips that act as friction fasteners.

Set the trim cover aside in a safe place.



 

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Loosen Counterclockwise
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Top Nut Removed
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Loosen Bottom Nut
Loosen the two nuts on the inner edge of the tail light housing by turning them in the counterclockwise direction with the 10mm socket and a 1/4" drive ratchet.
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Two Nuts Removed
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Plastic Pry Bar Tool
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Pull Off Light Housing
Set the two nuts aside in a safe place.

The tail light housing is still held in place to the rear corner of the SUV by two pegs or "spikes" inserted into grommets that act as friction fasteners.

Use the plastic pry bar tool to very gently loosen the friction fasteners along the front outer edge of the tail light housing.

Avoid using excessive pressure or force to prevent from cracking the plastic lens of the tail light assembly or scratching the painted metal rear quarter panel.

You may need to re-insert the plastic pry bar tool in several locations to carefully loosen the two friction fasteners.

Once the friction fasteners feel like they have been loosened from the grommets, try carefully pulling the tail light housing straight away from the rear of the vehicle.

Turn over the tail light housing to view the bulb socket.

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Reverse Bulb Socket
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1/4 Turn Counterclockwise
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Bulb Socket Removed
Rotate the base of the grey plastic reverse bulb socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

If the old light bulb was recently turned on, be careful when you remove it. The bulb might still be hot enough to burn your fingers.

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Pull Out Old Light Bulb
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Push In New Light Bulb
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Empty Bulb Housing
Carefully pull the old light bulb straight out of the socket.

If you have trouble removing the old bulb due to rust (corrosion) or debris, try gently wiggling it back and forth while also pulling it straight out.

Push a new number 3057 bulb straight into the socket.

If you would like to have brighter reverse lights, install some compatible replacement 3057 LED bulbs.

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1/4 Turn Clockwise - Lock
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Bottom Plastic Peg
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Top Metal Spike
Re-insert the bulb socket into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

Line up the plastic peg at the bottom of the housing and the metal spike at the top of the housing with the grommets on the rear corner of the SUV.

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Slide On Tail Light Housing
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Spin On Two Nuts
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Tighten Nuts Clockwise
Slide the tail light housing back into place and push on it to secure the friction fasteners.

Spin on the two nuts a few turns by hand in the clockwise direction to prevent them from becoming cross threaded.

Tighten the two nuts by turning them in the clockwise direction with the 10mm socket and a 1/4" drive ratchet until they are snug.

Try to avoid over tightening the nuts to prevent from cracking the plastic tail light housing.

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Metal Retaining Clips
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Push On Trim Cover
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Tail Light Bulb Replaced
Line up the black plastic trim cover and push on it to secure the three retaining clips.

Double check that the trim cover is securely in place.

To test the new bulb, have an assistant step on the brake pedal and shift the transmission into reverse.

Be sure to write down the bulb change in your vehicle's service records.

Please check out all of my 2018-2020 Ford Expedition DIY Repair & Maintenance Guides.
 

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