How to Remove a CLS450 Front Bumper Cover (Forum Guide)
Hey everyone! đź‘‹
Whether you’re replacing a damaged bumper, upgrading to a new style, or just need better access for repairs like installing a front camera or intercooler, removing the front bumper cover on a Mercedes-Benz CLS450 (especially the C257 model, 2019+) isn’t as intimidating as it sounds. I figured I’d post a step-by-step guide for anyone searching the forums and not getting a clear walkthrough.
Disclaimer:
I’m not a professional mechanic — just a weekend DIYer who’s done this on my own 2021 CLS450. Proceed at your own risk, and always double-check with your service manual if anything doesn’t match up.
Tools You’ll Need:
- Torx bits (T25, T30)
- Ratchet with extension
- Trim removal tool or flathead screwdriver (wrapped in tape)
- 10mm socket
- Jack and jack stands (if needed)
- Painter’s tape (optional, to protect paint)
- Plastic containers for screws and clips (label them!)
Step 1: Prep the Car
Park on a level surface, engage the parking brake, and disconnect the battery if you’re working near sensors or wiring. If you’re lowered or have AMG bodywork, you may want to jack up the car a little to get easier access underneath.
Apply painter’s tape around the bumper edges where it meets the fenders and headlights — this prevents scratches during removal.
Step 2: Remove Underbody Screws and Clips
Slide under the front bumper. You’ll find several screws holding the bottom of the bumper cover to the splash guard and undertray. Use a T25 Torx and 10mm socket — remove them all. Keep an eye out for hidden plastic clips near the wheel wells and edges.
Step 3: Remove Fender Liner Screws (Both Sides)
Turn your front wheels to one side to get access to the inner fender. The screws securing the bumper to the liner can be taken out with a T25. There are typically 3-4 screws in there, depending on your model.
Pro tip: A flashlight really helps here.
Must Read: Why Is The Hood Of My Car Smoking​?
Step 4: Remove Top Screws Under the Hood
Pop the hood and look at the area just above the grille — you’ll see about 6-8 screws or clips holding the top of the bumper to the front support. Take these out with your Torx bit. Don’t let them fall into the engine bay!
Step 5: Disconnect Sensors and Lights
Before pulling the bumper off completely, peek behind it and disconnect any wiring harnesses. Depending on your trim, you may have:
- Parking sensors
- Fog lights
- Front camera (if equipped with 360 view)
- Headlight washers
Gently press the clips and disconnect each one. Don’t yank anything!
Step 6: Remove the Bumper
Now comes the fun part. With all bolts removed and wires disconnected, the bumper should be free. Start at one side — near the fender — and gently pull outward. You’ll hear it pop from the clips. Work your way across, and have a friend help you hold it once it’s loose. It’s not super heavy, but it’s awkward.
Extra Notes:
- If you’re replacing the bumper cover, swap over any grille, radar sensors, and trim pieces.
- Reinstall is the reverse of removal — just take your time lining everything up.
- Don’t overtighten the screws going back in, especially on the plastic clips.
Final Thoughts
This whole job can be done in about 1-2 hours if you’ve got your tools ready. It’s a pretty satisfying DIY and can save you a few hundred bucks in labor. Hope this post helps someone out — I know how frustrating it is trying to piece together instructions from a bunch of forum threads with half the photos missing!
If anyone’s done this on a CLS53 or has tips for removing AMG-specific trim, feel free to comment and share below. 👇
Happy wrenching!