How to Replace a 2017–2022 Tesla Model 3 Rear Bumper (Step-by-Step Guide)

Replacing the rear bumper on a Tesla Model 3 might seem intimidating, but with the right tools and clear steps, it's a job you can tackle at home. This guide covers how to remove and install the rear bumper on a 2017 to 2022 Tesla Model 3, whether you're fixing collision damage or upgrading the look. And if you need a color-matched replacement bumper, ReveMoto offers pre-painted options shipped straight to your door. From removal to reassembly, you'll find straightforward instructions and helpful tips throughout the process.

🛠️ Tools You'll Need:

• T20 Torx bit

• Flathead screwdriver or trim removal tool

• 8mm and 10mm socket with ratchet wrench

• Plastic panel clip remover

• Soft towels or bumper stand

• Bubble wrap or a blanket (for protection)

🔧 Rear Bumper Removal & Installation Steps:

1. Remove the underbody cover by prying up the two plastic tabs using a flathead or trim removal tool.

2. Remove two 10mm bolts located on each side of the bottom bumper.

3. Pull back the fender liner from the wheel well. Use a T20 Torx bit to remove the hidden screw. Repeat on both sides.

4. Inside the trunk, remove the plastic tabs on the liner using a flathead or trim tool, then pull the liner back to access the taillight fasteners.

5. Unscrew the plastic retaining nut. You can use a panel clip remover or your fingers to gently release the clip before unscrewing to make this step easier and avoid damaging the surrounding area.

6. Carefully remove the passenger-side taillight by prying with a plastic trim tool from the side and top while applying outward pressure. This side is tighter and may require gentle leverage to release the tabs without cracking the lens. Once loosened, press out from the inside of the trunk and pull evenly from the rear.

7. Carefully remove the driver-side taillight by pulling straight back with even pressure. This side is generally easier to remove, especially near the charging port, as it allows you to apply equal force across the taillight.

8. Remove the bolts located behind the taillights using a 10mm socket and ratchet. These are found just beneath each taillight housing — one on the passenger side and one on the driver side.

9. Unclip the bumper ends on both sides by pulling outward near each wheel well. On the driver’s side near the charging port, use both hands to pull straight back while applying even pressure. This helps release the tabs cleanly without damaging the bumper.

10. Gently pull the bumper out from the center. Make sure to disconnect the sensor wiring harness before removing the bumper completely.

11. Use a flathead screwdriver to push up on the tabs along the bottom edge of the bumper. These tabs secure the lower valance. Work your way across to release the entire piece. Tip: Push up on the tabs rather than pulling out — you should hear a click as each one releases.

12. Remove the parking sensors by pressing in the side tabs. Be sure to save the rubber grommets, as they will be reused.

13. Remove the locking pins along the lower valance to release it from the bumper.

14. Remove the lower valance by sliding it out from the bumper. If needed, use a flathead screwdriver to help release the tabs as you work across.

15. Remove the reflectors by pressing the locking pins on the back and pushing them out. If stuck, gently pry with a flathead tool to release them.

16. Place the new bumper on a soft surface like towels or a bumper stand to prevent scratches.

17. Reinstall the sensors by aligning them with the tab slots and pressing them in until they click. Ensure the grommets are properly seated to prevent moisture intrusion.

18. Snap the reflectors into place by aligning the tabs with the slots and pressing them in until secure.

19. Slide the lower valance into position on the new bumper and press each locking tab down until fully secured.

20. Secure the lower valance further by tightening the bolts or clips into place along the mounting points. A ratchet or socket tool may be needed.

21. Lay down a blanket, bubble wrap, or a soft cloth to protect the bumper from scratches during installation.

22. Carefully align and loosely position the bumper onto the car’s body. Let it rest gently in place without fully locking it in, to prepare for the following steps.

23. Reinstall the bolts underneath the bumper using a 10mm socket. These help hold the bumper in place temporarily while you complete the wiring and fitment.

24. Reconnect the sensor wiring harness behind the bumper. Push the connectors together firmly until you hear a click, ensuring a secure and weather-tight seal.

25. Once the wiring and bolts are secure, lift the bumper fully into place. Start by pressing the center section until it snaps in, then press the sides near the taillights until the bumper sits flush with the body.

26. Insert the 10mm bolts near the wheel wells on both sides to firmly secure the edges of the bumper to the fenders.

27. Reinstall the 10mm bolts on the lower edge of the bumper, directly behind the rear wheel wells. These bolts correspond to the ones removed in Step 2 and secure the bumper to the underside of the vehicle.

28. Reinstall the 8mm bolt on the taillight bracket to secure it in place before inserting the taillight housing.

29. Align the taillight and press it in until the prongs slide into their slots. Apply firm, even pressure until the taillight sits flush with the body.

30. Reconnect the taillight wiring harness by plugging it in until you hear a click. This ensures the electrical connection is secure before finalizing the taillight installation.

31. Secure each taillight using only the plastic retaining nut. Tighten it by hand or with a tool until snug—no need to overtighten. Repeat this process on the opposite side to complete the taillight installation.

32. Reattach the trunk liner tabs and plastic covers.

33. Reinstall the plastic screw-type trim clip above the taillight by pressing it into place and rotating it clockwise until it locks securely.

34. Reinstall the plastic trunk threshold trim by aligning it with the clips and pressing it down firmly until all tabs snap back into place.

35. From underneath the bumper, reinstall the final 10mm bolt to secure the underbody panel. This helps lock the bumper in place from below.

36. Reinstall the underbody access panel by aligning its tabs and pressing it back into place until secure.

The bumper’s on, everything’s secure, and it’s looking good. While some steps might feel a bit tricky the first time around, it’s all manageable if you take your time. This guide covered each step, but if you want to see how it all comes together, you can watch the full install in the video below. It's helpful to see where each clip and bolt actually goes, especially if you're doing it for the first time.

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