Parts for your 2010 Toyota Land cruiser-Knock sensor

2010 Toyota Land Cruiser Knock Sensor — What’s Fitted and What’s Not

Based on Toyota technical literature, a knock sensor is relevant to some 2010 Land Cruiser 200 Series variants but not others. The 5.7‑litre 3UR‑FE petrol V8 (URJ200) is equipped with two knock sensors (one per bank), as shown in the Toyota Land Cruiser 200 Series Repair Manual and the Toyota Electronic Parts Catalogue, related diagnostic trouble codes P0325/P0330 also appear in Toyota Service Information (TIS). By contrast, the 4.5‑litre 1VD‑FTV twin‑turbo diesel (VDJ200) does not use a conventional knock sensor, it isn’t present in the engine harness or EWD, and there are no knock‑sensor DTCs listed for that diesel ECU. So, the knock sensor applies to 2010 petrol models, while it’s not used on the diesel.

For petrol 3UR‑FE models, the knock sensor’s job is simple but critical: it “listens” for abnormal combustion (pinging/detonation) and lets the ECU trim ignition timing to keep the big V8 running smoothly on Aussie or Kiwi fuels, whether towing up the ranges or cruising across the Nullarbor. The LandCruiser uses two sensors mounted in the V of the block beneath the intake manifold. When they age, get contaminated by coolant or oil in the valley, or their wiring hardens with heat, the ECU may pull timing more than necessary, costing power and economy, or log a fault.

While knock sensors aren’t a routine service item, they deserve attention during major intake work. Smart practice on a 3UR‑FE includes:

• Inspecting the sensor bodies and sub‑harness when the intake manifold is off (spark plug or PCV service is a handy time).
• Keeping the valley clean and dry, coolant leaks from heater pipes or manifold gaskets can upset readings.
• Using genuine‑quality sensors and the correct sub‑harness routing to avoid vibration or chafe.
• Tightening to factory torque and on a clean, flat mounting pad, confirm spec for the exact VIN.

Symptoms that point to knock‑sensor trouble include a check‑engine light with P0325/P0330, flat performance, higher fuel use, or audible pinging under load. Because the sensors live under the manifold, replacement is a medium‑difficulty job: battery disconnected, intake removed with new gaskets, sensors swapped and torqued, harness clipped correctly, codes cleared, and a road test to confirm timing control. Most owners will have a trusted workshop handle it during scheduled servicing or when chasing those DTCs.

Diesel 1VD‑FTV owners can relax—there’s no traditional knock sensor to maintain, the ECU manages combustion via injection timing and pressure using other sensors.

• Fitted: 2010 Land Cruiser 200 petrol (3UR‑FE) — yes, two knock sensors.
• Not used: 2010 Land Cruiser 200 diesel (1VD‑FTV) — no conventional knock sensor.

Popular questions

Where is the knock sensor on a 2010 Land Cruiser 3UR‑FE?
It’s tucked under the intake manifold in the V of the engine, with one sensor per bank. Access requires removing the upper intake, so most workshops combine inspection or replacement with other intake‑off jobs to save labour and gasket costs.

Can a bad knock sensor damage the engine?
The ECU usually plays it safe by retarding timing if it’s unsure, which prevents knock but robs performance and economy. Prolonged real knock from poor fuel or heavy load can be harmful, so if there’s a DTC or audible pinging, it’s best to sort it promptly.

Do 2010 diesel Land Cruisers (1VD‑FTV) have a knock sensor?
No. The diesel uses other feedback (cam/crank signals, boost, fuel pressure and temp, air mass, etc.) to control combustion. There’s no conventional knock sensor in the wiring diagrams or parts listings for the VDJ200.