This safety recall manual is for 2018 Toyota Highlander and 2017 Toyota Sienna vehicles. The recall is related to a potential issue with the vacuum pump assembly, which may cause a loss of braking assist and increase the risk of a crash.
Repair Procedure
Technicians performing this recall repair must hold at least one of the following certification levels: Certified Technician (Engine), Expert Technician (Engine), Master Technician, or Master Diagnostic Technician.
Required Parts
The following parts are required for the repair: Vacuum Pump Part Number 29300-OPO11, Throttle Body Gasket Part Number 22271-OP020, and a Bolt or Flange Part Number 90105-A0127.
Tools and Equipment
The following tools and equipment are required: Techstream, Standard Hand Tools, Torque Wrench, and Toyota Genuine Adhesive 1324 or equivalent thread sealer.
Background
The involved vehicles are equipped with a vacuum pump assembly, which provides braking assist. A component in the vacuum pump assembly may have been manufactured incorrectly, leading to a sudden loss of braking assist while driving.
Components
The vacuum pump assembly consists of several components, including the inlet air cleaner, coolair intake, duct seal, fuel vapor feed hose, and vacuum hose sub-assembly.
This summary is based on the content provided on the first two pages of the manual.
Manual:
Download: Toyota Safety Recall Manual for 2018 Highlander and 2017 Sienna
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