2015-2021 Lexus NX 300, 200 and 200t Wiring Diagram

It’s the same trusted document used by Lexus dealership technicians—comprehensive, manufacturer-authorized, and ideal for both professionals and DIY users.

Electrical Manual Reference:

• EM31K4E

Chassis Code:

AZ10 – First Generation Lexus NX Platform

Engines Covered:

• 1986 cc 3ZR-FAE I4 – NX 200 (Russia; Model Code: ZGZ10)
• 1998 cc 8AR-FTS Turbo I4 – NX 200t / NX 300 (Model Codes: AGZ10 / AGZ15)

What’s Included:

• ✔️ Full vehicle wiring diagrams & schematics
• ✔️ Power distribution & ground locations
• ✔️ ECU, BCM, and sensor wiring
• ✔️ Lighting, infotainment, SRS, HVAC systems
• ✔️ Connector views, pinouts, and splice locations

Benefits:

• ✅ Manufacturer-authenticated repair guidance
• ✅ Save time and costs with accurate diagnostics
• ✅ Fully searchable, printable, and portable PDF
• ✅ Compatible with Windows, macOS, smartphones, and tablets

⚙️ Technical Specifications & Performance

• Models: NX 200t (2015–2017) ➜ renamed NX 300 (2018–2021); NX 200 (select markets)
• Engines:
  • 2.0L Turbo I4 8AR-FTS (NX 200t / NX 300)
  • 2.0L NA I4 3ZR-FAE (NX 200, regional)
• Power (approx.): 235 hp & 258 lb-ft (8AR-FTS); ~150 hp & 142 lb-ft (3ZR-FAE)
• Transmission: 6-speed automatic (Aisin) • Drive: FWD or AWD
• 0–60 mph: ~6.9–7.2 s (Turbo) • ~10 s (NA 2.0)
• Fuel Economy (Turbo, EPA est.): ~22–24 mpg city / 27–30 mpg hwy
• Towing Capacity: up to ~2,000 lb (when properly equipped)
• Fuel: Premium unleaded recommended for Turbo (8AR-FTS)

🔧 Top 10 Common Mechanical Issues (Owner-Reported)

1. Turbo wastegate rattle or underboost on 8AR-FTS
2. Carbon buildup on intake valves (DI engines)
3. Water pump seep/leak over time
4. Front brake rotor warping/pulsation
5. Premature front strut mount/bushing wear
6. Engine mount deterioration causing vibration
7. Coolant thermostat stuck open (slow warm-up)
8. PCV system oil mist leading to deposit formation
9. Exhaust heat shield rattle at certain RPM
10. Wheel bearing noise at highway speeds

💡 Top 10 Common Electrical Issues (Owner-Reported)

1. Remote Touch/trackpad infotainment lag or freezes
2. Backup camera intermittent image/latency
3. Door lock actuator slow/weak operation
4. TPMS sensor battery failure alerts
5. Bluetooth pairing stability issues
6. Intermittent LED DRL/turn lamp concerns
7. Parking sensors false proximity alerts
8. Battery drain after short trips (accessory loads)
9. Mirror auto-fold/memory misalignment
10. Occasional CAN communication soft faults (U-codes)

🚗 Top Competitors (Service Info Links)

• BMW X3
• Audi Q5
• Mercedes-Benz GLK/GLC
• Volvo XC60
• Acura RDX

📊 Pros & Cons

🛠️ Maintenance Schedule (Typical)

📢 Recalls, Advisories & Safety Alerts

• Fuel pump (low-pressure) recall: Possible impeller deformation leading to stall—verify by VIN.
• Takata airbag inflator: Certain years/markets affected—VIN check required.
• PCS/Pre-Collision software update: ECU calibration to improve detection logic (applicability varies).
• ABS/VSC actuator notices: Limited cases of internal valve/solenoid performance—TSB/repair as applicable.

🔎 Always confirm outstanding actions with your local Lexus dealer using the vehicle’s VIN.

🚗 Engine Control Module (ECM)