Toyota Kluger: 2GR-FKS 3.5 V6 Secondary Timing Chain Rattle and Stretch

The 2GR-FKS 3.5-litre V6 in GSU50 Kluger models is prone to secondary (head-to-cam) timing chain rattle and elongation, typically emerging after 100,000 km or following extended oil change intervals. The primary chain is more robust, but the secondary chains that drive each bank's cam phaser sprockets wear, producing a cold-start metallic rattle that dissipates as oil pressure builds. Advanced wear causes cam timing errors and misfires. Toyota Kluger-specific forums in Australia document this as one of the most common major failures on this generation.

• Metallic rattling on cold start from engine top end, clears within 5–20 seconds
• Check engine light with P0011, P0012, P0016 or P0017 cam timing DTCs
• Rough idle when cold
• Oil pressure warning if chain has stretched significantly
• Slight ticking under sustained high load

1. 1

   Cold-start the engine immediately after sitting overnight — listen for metallic chain rattle from the top of the engine.

2. 2

   Scan for cam timing and VVT-related DTCs.

3. 3

   Check oil change history and oil specification; 0W-20 synthetic is required and extended intervals accelerate chain wear.

4. 4

   Remove oil filler cap and inspect for sludge.

Parts involved: Timing chain.

≈A$2,580 to ≈A$6,900 at independent workshop rates, shown as an approximate guide in Australian dollars. That is for this job on its own, not for the car.

An estimate, converted to Australian dollars, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “Has there ever been an engine rattle on cold start?”
• “Has the vehicle always been serviced with the correct 0W-20 synthetic oil?”
• “Has any timing chain or VVT work been carried out?”

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.