Autel Tesla diagnostic splitter cable TCAN003 — Model S/X/Y & Model 3 (post‑2021), 16‑pin OBD2 compatibility

Autel TCAN003 is the official Tesla diagnostic splitter cable that connects Autel scanners to Tesla Model S, Model X, Model Y (all years) and Model 3 (post‑2021 heat pump) for full vehicle communication and troubleshooting.

This genuine Autel adapter replaces multiple legacy plugs with a single 2‑in‑1 cable that simplifies access to Tesla CAN and X437 ports. Built as an updated alternative to earlier Autel 12‑pin and 20‑pin adapters, the TCAN003 exposes a modern 16‑pin OBD2 connection that works with a broad range of Autel diagnostic tools. Use it with compatible MaxiSys and MaxiCOM scanners to read modules, pull DTCs, stream live data, and complete guided diagnostic workflows.

Which Tesla models and ports does this cable support?

The TCAN003 is designed to cover Tesla Model S and Model X across all model years and Model Y across all years, plus Model 3 vehicles manufactured after 2021 that include the heat‑pump HVAC system. It maps to different physical ports depending on the car: the X437 port beneath the center screen for S/X and the CAN port at the bottom of the right front A‑pillar for Y and supported 3s.

• Model S & Model X: connects to the X437 diagnostic socket under the central display
• Model Y: connects to the CAN connector at the right front A‑pillar base
• Model 3 (post‑2021, heat pump): uses the same CAN port as Model Y
• Not for early Model 3 without heat pump — verify VIN when in doubt

How does TCAN003 improve compatibility compared to older adapters?

Autel reworked the previous multi‑pin adapters into this consolidated 2‑in‑1 cable so technicians no longer need separate leads for each Tesla platform. The TCAN003 replaces the older 12‑pin and 20‑pin variants while upgrading the legacy 15‑pin interface to a standard 16‑pin OBD2 style plug, expanding scanner compatibility and simplifying inventory.

• Single cable replaces multiple legacy adapters for fewer parts to manage
• Updated 16‑pin OBD2 port increases compatibility with modern Autel scanners
• Works with a wide range of Autel MaxiSys and MaxiCOM units that include Tesla software

Which Autel scanners and software does this adapter work with?

The cable is intended to be used with Autel diagnostic hardware that supports Tesla protocols. When paired with supported scanners, it enables access to Tesla‑specific menus, fault reading, live data, and guided procedures. Software availability depends on your scanner model; some units include the Tesla package out of the box.

• Compatible Autel models: MS908S PRO, MS908S PRO II, MK908 PRO II, Elite series, MS909, MS919, Ultra, Ultra Lite, MS909EV, and Ultra EV
• No separate Tesla hardware required — use existing compatible Autel scanners
• Confirm scanner firmware and software include Tesla coverage before diagnosing

What safety and support features should I know about?

Autel recommends powering the vehicle off before connecting or disconnecting diagnostic cables to reduce risk of communication errors or electrical issues. The TCAN003 ships with manufacturer support and warranty coverage to protect your purchase and enable long‑term use in workshop environments.

• Always switch vehicle power off prior to connector disassembly or installation
• Includes one‑year limited warranty, 30‑day return/replacement window, and lifetime technical support
• Autel support available for compatibility checks — supply your VIN when requested

Who is this cable for? Automotive technicians, independent EV specialists, and fleet managers who use Autel diagnostic equipment and service Tesla vehicles will benefit most from the TCAN003. It’s ideal if you need one reliable, up‑to‑date adapter that covers multiple Tesla models without juggling obsolete connectors. If you’re unsure about compatibility, provide the vehicle VIN to Autel support or confirm your scanner’s Tesla software pack before ordering.