Rear Left Door Lock for Tesla Model 3/Model Y (-2023) | 1500674-91-B

1. Core Function Description

1. Reliable Locking & Unlocking: Equipped with a reinforced cam-lock mechanism, it ensures the rear left door stays securely locked during driving, parking, or rough terrain. It supports smooth operation via Tesla’s key fob, interior switches, or mobile app, with a rapid response time (≤0.6 seconds) for convenient access.
2. Vehicle System Integration: Communicates in real-time with the Body Control Module (BCM) to transmit lock status, enabling coordinated functions such as activating the vehicle’s anti-theft system when locked or triggering "door ajar" alerts on the dashboard if not fully closed. This integration maintains consistent security and user feedback.
3. Environmental & Wear Resistance: Built with corrosion-resistant materials and sealed components, it withstands water, dust, and extreme temperatures. This protects internal gears and electronics from damage, ensuring long-term performance in rain, snow, or high-humidity environments.

2. Specification Parameter Table

3. Fault Judgment (Signs for Replacement)

• Lock/Unlock Failures: The door does not respond to key fob, app, or interior commands, or requires repeated attempts to operate. This may stem from a faulty motor, worn gears, or damaged wiring.
• Abnormal Noises: Grinding, squeaking, or clicking sounds during operation, caused by debris in the mechanism, misaligned components, or worn-out parts.
• Dashboard Alerts: Messages like "Rear Left Door Lock Malfunction" or "Check Door Lock" on the display, signaling a loss of communication with the BCM.
• Insecure Locking: The door can be opened from the outside or inside despite being "locked," indicating a failed locking pin or weak spring.

4. Advantages of Premium Brand-Grade (vs. Generic Products)

5. Installation Details

5.1 Package Contents

• 1× Rear left door lock (1500674-91-B)
• 4× High-strength mounting screws (matching OEM specifications)
• 1× Installation guide (with diagrams for door panel removal and wiring)
• 1× Lubricant packet (silicone-based, for maintaining mechanism smoothness)

5.2 Required Tools

• Plastic trim removal tools (to avoid damaging door panels)
• Torx screwdrivers (T20 and T25)
• Socket set (8mm)
• Electrical connector tool (for safe harness disconnection)

5.3 Installation Precautions

1. Power Disconnection: Disconnect the vehicle’s 12V battery before installation to prevent electrical shorts while handling wiring.
2. Door Panel Removal: Use plastic tools to gently pry off the interior door panel, taking care not to break clips or damage wiring behind it.
3. Wiring Handling: When disconnecting the old lock’s harness, press the release tab—do not pull wires directly to avoid damaging the vehicle’s electrical system.
4. Torque Control: Tighten mounting screws to 7±1Nm to secure the lock without warping the housing.