2021-2023 Toyota Camry Vacuum Pump Knocking Noise TSB

Owners of affected 2021-2023 Toyota Camry, Avalon, and Highlander vehicles may notice a Toyota Camry vacuum pump knocking noise specifically when the engine is idling. This issue is addressed by a Toyota Technical Service Bulletin (TSB).

Symptoms

The primary symptom associated with this TSB is a distinct knocking noise. This noise originates from the vehicle's vacuum pump and is most noticeable when the engine is operating at idle.

Diagnosis / Trigger Conditions

This knocking noise is specifically observed in vehicles equipped with the 2GR-FKS engine. The TSB highlights that the condition is present at idle, suggesting it may be related to the vacuum pump's operation under low engine speeds or specific load conditions. The vacuum pump is a component of the fuel system, gasoline, and its proper function is crucial for various vehicle systems.

Owner Action

If you hear a Toyota Camry vacuum pump knocking noise, it is recommended to have your vehicle inspected by a Toyota dealership. The dealership technicians are equipped to diagnose the exact cause of the knocking noise and perform any necessary repairs or replacements as outlined by the TSB. Since this is a manufacturer communication, repairs may be covered under warranty, depending on your vehicle's specific warranty coverage and mileage.

This issue, identified as a Toyota Camry vacuum pump knocking problem, is addressed by Toyota to ensure vehicle performance and owner satisfaction.

Source: NHTSA ID 10234314