Vibration at approximately 1500 RPM in D4D (diesel) 150 series Prado, often described as a rattle or resonance. The location of the vibration is commonly reported to be in the right-hand (RH) side of the dashboard, A-pillar, or front guard area. Symptoms seem to worsen under light load or gentle acceleration around 1500 RPM.
Solution(s)
Multiple solutions have been reported with varying degrees of success:
- RH Guard Modification: The most common fix involves “packing out” areas of the RH front guard near the A-pillar and headlight. This likely involves adding insulation or dampening material to reduce vibration transfer. Some dealers are aware of this fix.
- Air Filter Housing: Check and secure the air filter housing, ensuring all clips are present and functional. A missing or broken clip can cause excessive vibration in the air box.
- Wiring Looms/Air Conditioning Pipe: Secure loose wiring looms and insulate air conditioning pipes that may be vibrating against other components.
- ARB Bull Bar Bolts: If an ARB bull bar is installed, check and torque the mounting bolts, applying Loctite. Loose bolts can cause or exacerbate vibrations.
Parts
- Loctite: Used on bull bar mounting bolts.
Notes
- The vibration may be temperature-sensitive, being more noticeable when the engine is warm.
- Some dealers initially dismiss the issue as “normal” for the 150 series.
- Contacting Toyota Customer Experience Centre (1800 252 097) to log the issue and obtain a case file may expedite resolution.
- Some owners have reported success with dealers submitting a DPR (Dealer Product Report) to Toyota.
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