Front Left (Driver Side) Air Suspension Height Level Sensor for Tesla Model S/X (2012-2021) | 1027941-00-B

1. Key Specifications & Compatibility

2. Why This Sensor Is Critical for Your Model S/X’s Air Suspension

1. Maintains Level Ride: Detects if the front left side sags (e.g., from heavy cargo or a worn air spring) and sends data to the suspension controller. The system then inflates/deflates the air spring to keep the vehicle level, preventing uneven tire wear and improving handling.
2. Adapts to Driving Modes: Works with "Comfort," "Sport," or "Highway" modes—lowers the suspension at high speeds for aerodynamics, or raises it over rough roads (the sensor confirms the suspension reaches the correct height).
3. Protects Suspension Components: Alerts the system if the suspension is overextended (e.g., hitting a deep pothole), preventing damage to air springs, struts, or control arms.

3. What It Actually Does (No Tech Jargon)

• Real-Time Height Checks: Every time you drive, the sensor uses a small magnet to track how far the front left suspension moves up/down. It sends this data to your Tesla’s suspension computer 50x per second—faster than the blink of an eye.
• Fixes Sagging: If you load luggage in the front trunk (frunk) or have passengers in the front seat, the sensor notices the front left drops and tells the air spring to inflate—keeping the car level so your steering feels responsive.
• Works in All Conditions: Rain, snow, or salted roads won’t damage it. The IP6K9K rating means it handles high-pressure car washes and winter road grime without shorting out.
• No Lag, No Guesswork: Unlike old analog sensors, this Hall-effect sensor delivers digital data—so the suspension reacts instantly (no waiting for the system to "catch up" to uneven roads).

4. Signs Yours Needs Replacement

• Front Left Sagging: The front left side sits lower than the front right (you’ll notice uneven tire clearance above the wheel).
• "Air Suspension Fault" Alert: Your touchscreen shows this warning, and the suspension may lock in "Safe Mode" (limited speed, no height adjustments).
• Unstable Ride: The front left bounces over small bumps, or the vehicle leans heavily during turns (the sensor isn’t sending accurate height data to the controller).
• Driving Modes Don’t Work: The suspension won’t lower for "Highway" mode or raise for "Off-Road" mode (the sensor can’t confirm height changes).
• Erratic Height Changes: The suspension inflates/deflates randomly (the sensor is sending false data to the system).

5. Why It Beats Aftermarket Alternatives

• Tesla-Exact Calibration: Programmed with the exact height thresholds for 2012–2021 Model S/X. No "false fault" alerts (a common issue with generic sensors that don’t match Tesla’s software).
• Perfect Fit: Mounts to the front left control arm and chassis using factory holes—no drilling, grinding, or zip-ties. The 3-pin connector plugs directly into the original wiring harness (no wire splicing).
• Durable Build: The sensor housing is made of glass-filled nylon (resists impact from road debris) and the connector is coated with anti-corrosion plating (prevents rust from road salt).
• Long-Lasting Accuracy: Hall-effect technology doesn’t wear out like analog sensors—this one maintains ±0.5mm accuracy for 100,000+ miles (vs. generic sensors that drift after 30,000 miles).

6. Installation & What You Get

• 1x Front Left (Driver Side) Air Suspension Height Level Sensor (1027941-00-B)
• 1x Pre-lubricated mounting bolt (matches Tesla’s torque specs: 8 Nm)
• Digital Installation Guide: Step-by-step photos, how to safely lift the front of your Model S/X, and tips to avoid damaging the air spring during installation.

7. After-Sales Peace of Mind

• Warranty: Backed by a 1-year limited warranty. If the sensor fails due to manufacturing defects (e.g., electrical failure, inaccurate readings), we offer free replacement.
• Technical Support: Our team of EV specialists is available to answer installation questions (via email or chat) if you get stuck.

Company Profile

Guangzhou Fuheng Auto Parts Supply Chain Co., Ltd., located in the Guangzhou auto parts business district, adheres to the business philosophy of "quality first, pragmatic innovation, service-oriented, and co creation and win-win", and has established the independent brand "CheFuning". The Che Funing brand regards human resources as the foundation of the enterprise and attaches great importance to the construction of the talent team; The Che Funing brand regards product quality as the life of the enterprise, and every single product from screws to accident parts is carefully selected.

The CheFuning brand helps partners transform from traditional fuel vehicles to new energy vehicle models, expands from a single horizontal vulnerable parts operation to a new energy full vehicle parts channel enterprise, upgrades from regional chain stores to independent brands of new energy full vehicle series, standardizes the operation of independent brands in the new energy industry, and integrates resources to reduce costs and increase efficiency, occupying the commanding heights of enterprise management.