Exterior Systems Control ECU for Toyota

🔧💡 This factory-style control unit manages key exterior functions on your Land Cruiser. It keeps mirror motors, indicators, puddle lamps, and related body electrics working in sync, delivering safe signaling and clear visibility in all weather. Built for tough use, it suits daily driving, towing, and off‑road travel.

Why this part is needed

Modern 4x4s rely on a dedicated ECU to coordinate switches, sensors, and actuators. It stabilizes voltage, communicates on the CAN/LIN bus, and protects circuits, so your mirrors fold, adjust, and heat correctly, and your side lights behave exactly as the driver commands. Reliable control prevents nuisance faults and extends component life.

How it works

Inside is a microcontroller with solid‑state drivers. It reads inputs from door modules and stalk switches, then sends precise outputs to lamps and motors. Built‑in diagnostics store DTCs, isolate shorts, and survive vibration and splash thanks to a sealed housing. Plug‑and‑play connectors ensure OEM fit and stable communication.

What happens if it breaks

Symptoms include dead or erratic mirror functions, inoperative mirror indicators or courtesy lamps, random flicker, blown fuses, U‑codes on a scan tool, or parasitic battery drain. Ignoring failure can reduce signaling and visibility—hurting safety, comfort, and inspection readiness.

Replacement tips

Disconnect battery, match connectors/pin count, inspect grounds, check fuses/relays, scan and clear DTCs, and run function tests. Usually plug‑and‑play; certain trims may need initialization.

Compatibility

• Land Cruiser