2017-2024 Tesla Model 3 & Model Y Door Latch: Why It Fails to Open or Close

Symptoms of a Failing Door Latch Assembly

A faulty rear door latch on a Tesla Model 3 or Model Y can cause a range of frustrating and potentially unsafe conditions. Because the system is electronic, symptoms can sometimes be intermittent or confused with software settings.

• Door Bounces Open: The most common and obvious sign of a mechanical failure within the latch. You'll attempt to close the door, but it will not catch on the striker and will simply bounce back open. This makes the vehicle undriveable.
• Door Will Not Open From Outside: The exterior door handle will present, but pressing it does nothing. The door remains locked, 🎬 See how to fix a sticky or stuck exterior door handle. forcing passengers to enter from the other side. This can sometimes be a software issue, but is often a sign of a failing latch or a related electrical problem.
• Door Stuck Completely Shut: In some cases, the latch can fail in the closed position, refusing to release from either the inside or outside controls. 🎬 Watch: Troubleshooting why your Tesla door latch is stuck shut. This can be a major safety concern, especially in an emergency.
• Requires Excessive Force to Close: You may find you have to slam the door much harder than usual for it to latch properly. This often points to a misaligned striker or a worn internal latch mechanism.
• "Door Open" Warning on Display: The latch's position sensor may fail, causing the car to incorrectly believe the door is open even when it is securely shut.
• Remote Unlock Fails: Attempting to unlock or unlatch the specific door using the Tesla mobile app may result in a timeout or failure message.

Known Issues, Investigations, and Recalls

While there are no active recalls for the direct failure of the rear door latch assembly (part number 1500674-00-B), Tesla's door mechanisms have come under scrutiny from the National Highway Traffic Safety Administration (NHTSA).

NHTSA Investigation PE25-010 (Model Y)

In September 2025, the NHTSA opened a preliminary investigation into the 2021 Tesla Model Y after receiving multiple complaints of the electronic door handles failing to open the doors from the outside. Preliminary findings suggest the issue may be caused by insufficient voltage reaching the electronic door locks from the vehicle's 12-volt low-voltage battery. Owners reported that the failure happened without any prior low-voltage warning on the dashboard. This investigation is ongoing and could lead to a recall if a safety defect is confirmed.

NHTSA Investigation DP25-002 (Model 3)

A separate NHTSA investigation was opened for the 2022 Tesla Model 3 concerning the emergency mechanical door release. This probe focuses on complaints that the manual release lever is hidden, unlabeled, and difficult to find in an emergency, which could trap occupants if the vehicle loses 12-volt power. This is a design and accessibility issue related to emergency egress, not a failure of the primary electronic latch itself.

Buying a Used Door Latch Assembly

For this part, a quality used OEM latch is a smart and cost-effective alternative to a new dealer part. Aftermarket options are virtually non-existent for this specific electronic component, and a recycled OEM part ensures perfect fitment and electronic compatibility. Here’s what to check before you buy:

• Verify the Part Number: Insist on seeing a clear photo of the part number. You need 1500674-00-B for the rear driver's side door. The passenger side part number is different and will not work.
• Inspect the Electrical Connector: This is the most critical inspection point. Look for any signs of corrosion (green or white powder), bent pins, or cracks in the plastic housing. A damaged connector is the number one reason to reject a used part.
• Check Mechanical Movement: Using a screwdriver or a similar tool, gently push on the U-shaped jaw of the latch. It should move smoothly and click into a 'closed' position. Then, pull the small release lever (where the interior handle cable would attach) to ensure it springs back open crisply. Any binding or roughness indicates internal wear.
• Examine the Plastic Housing: Check for any cracks or significant damage to the main body of the latch assembly. While minor scuffs are normal, deep cracks could indicate it was removed from a vehicle with heavy collision damage.
• Ask About the Donor Vehicle: If possible, find out the mileage of the vehicle the part came from. A latch from a lower-mileage vehicle is always preferable.

Replacement Difficulty and Cost

Replacing the rear door latch assembly on a Model 3 or Model Y is a complex job that requires significant disassembly of the door.

• Difficulty Rating: 4 out of 5
• DIY Feasible: Not recommended for beginners.
• Estimated Time: 1.5 - 2.5 hours

The official Tesla service procedure requires removing the interior door trim panel, the door closeout panel, and the window regulator assembly to gain access to the latch. The latch is held in by three Torx bolts. While the mechanical swap is achievable for an experienced DIY mechanic, there's a significant catch: after installation, Tesla's service manual for some models calls for running a "Self Test" routine using the proprietary Toolbox 3 diagnostic software. Failure to perform this step could result in improper function. For this reason, professional installation is highly recommended.

Cost Comparison

Pricing estimates are based on market research at the time of writing and may vary. Labor costs are based on a typical independent shop rate and the Tesla flat-rate time of 0.66 hours for this job.

Frequently Asked Questions (FAQ)