Revitalize Your Tesla Model S: A DIY Guide to Replacing Failing Headlights
For owners of the iconic pre-refresh Tesla Model S (like the 2017 P100D), there's a common issue that can detract from its timeless design: the dreaded yellowing of the Daytime Running Lights (DRLs). Over time, the original DRLs can lose their crisp, white brilliance, turning a faded yellow or failing altogether. This not only ages the look of your vehicle but can also be a safety concern. While a trip to the Tesla service center is one option, it often comes with a hefty price tag. Another route is sourcing used parts, but that's a gamble—you risk inheriting the same problem without a warranty. Fortunately, there's a superior solution that combines quality, aesthetics, and value: a complete headlight assembly upgrade from Tesery.
This guide will walk you through the entire DIY process of replacing your old, tired headlights with a set of brand-new, plug-and-play Tesery LED Headlight Assembly for Model S. We'll follow along with a detailed video to show you every step, from removing the front bumper to the final, satisfying power-on test. Get ready to restore that sharp, modern look to your Model S.
Why Your Model S DRLs Are Failing (And Why Tesery is the Answer)
The yellowing and failure of the original DRLs on the 2016-2020 Model S is a well-documented issue. It's primarily caused by heat degradation of the LED components and the materials within the light strip over thousands of hours of use. The result is a dim, unattractive yellow glow that stands in stark contrast to the brilliant white light of newer vehicles.
The visual difference is night and day. The old units present a 'burnt-out' and aged appearance, while the new Tesery headlights boast a pristine, high-clarity finish that looks like it just rolled off the factory floor.
The Tesery LED Headlight Assembly for Model S is engineered to be a direct, one-to-one replacement, but with modern durability. These aren't just cosmetic fixes; they are complete, sealed units with pre-installed electronic control modules. The high-gloss, crystal-clear lens and the distinct, integrated white LED DRL strip are designed to meet or exceed OEM specifications, ensuring a perfect fit and flawless, plug-and-play operation. This makes them the definitive choice for any owner looking for a reliable, long-term solution without the exorbitant cost of official service.
The Ultimate DIY Installation Guide: Step-by-Step
This project is entirely achievable for a DIY enthusiast with basic tools and a bit of patience. Before you begin, gather your equipment to ensure a smooth process.
Tools & Preparation:
- 10mm socket wrench (with extensions)
- T25 Torx driver or bit
- Small plastic pry tool or clip remover
- Soft moving blankets or towels (to protect the bumper)
- Two cardboard boxes or low stools (to support the bumper during removal)
Step 1: Frunk and Shroud Removal
First, open the frunk. You'll see three large plastic shroud pieces that line the storage area and cover the top of the bumper and headlights. These are held in by a series of plastic clips. Using your pry tool, carefully pop the center of each clip up and then pull the entire clip out. Work your way around all three shrouds and set them aside. This will expose the top mounting bolts for the bumper and headlights.
Step 2: Top Bumper and Headlight Bolts
With the shrouds removed, you'll see several bolts along the top edge. Using your 10mm socket wrench, remove the bolts securing the top of the bumper to the frame. You will also find bolts on the top of each headlight housing that need to be removed at this stage.
Step 3: Wheel Well Access
To release the sides of the bumper, you need to access a screw inside each front wheel well. Turn your steering wheel all the way to one side (e.g., all the way left to access the passenger side well). High up inside the wheel well liner, where the bumper meets the fender, you will find a single T25 Torx screw. It can be tricky to see, so feel for it first. Remove this screw. Repeat the process on the other side by turning the wheel in the opposite direction.
Step 4: Under-Bumper Hardware
Now, move to the front underside of the car. You will find a combination of six plastic clips (similar to the ones in the frunk) and two 10mm bolts that secure the bottom of the bumper to the underbody shield. Remove all of these fasteners. The bumper is now only held on by clips along the fender line.
Step 5: Bumper Removal
This is the most delicate step. Start at one of the wheel wells where you removed the T25 screw. Gently but firmly pull the edge of the bumper outwards, away from the fender. You will hear a series of popping sounds as the retaining clips release. Work your way from the side towards the center. Once both sides are free, the entire bumper assembly will be loose. Instead of fully disconnecting the sensor wiring harness, carefully rest the bumper on the boxes and blankets you prepared earlier. This saves you the hassle of dealing with complex wiring and provides ample room to access the headlights.
Step 6: Swapping the Headlight Housings
With the bumper out of the way, the headlight assemblies are fully exposed. Each headlight is held in by four 10mm bolts. Remove these bolts. The housing will now be loose. On the back, you will find a single large electrical harness connector. Press the release tab and pull the connector off. The old headlight is now free and can be removed from the car.
Step 7: Installing the New Tesery Headlights
Slide your new Tesery LED Headlight Assembly for Model S into position. Pay close attention to the mounting tabs to ensure they align perfectly with the corresponding slots on the car's frame for a factory-perfect fit. Reconnect the electrical harness—you should hear a confident click as it seats. Loosely thread in the four 10mm bolts.
Step 8: Test Before You Reassemble!
This is a crucial step. Before you bolt everything back together, test the new lights. Turn on the car and check that the new, bright white DRL illuminates correctly. This simple check can save you from having to take everything apart again if there's a connection issue.
Step 9: Final Assembly
Once you've confirmed the light is working, tighten the four mounting bolts. Now, simply reverse the entire disassembly process. Carefully lift the bumper and snap it back into place, starting from the sides and working your way around. Re-install the T25 Torx screws in the wheel wells, the 10mm bolts and clips on the underside, and the top bolts. Finally, place the three plastic frunk shrouds back in position and secure them with their clips.
The Stunning Final Result
Stand back and admire your work. The transformation is immediate and dramatic. The new, brilliant white DRLs give your Model S a modern, aggressive presence, erasing years from its appearance. The clarity and output of the Tesery headlights not only look fantastic but also improve visibility and safety. This DIY project is one of the most impactful upgrades you can perform, restoring the premium aesthetic your Tesla deserves.
