Installation
ComponentsToyota CH-R Service Manual > Brake Booster: Inspection
INSPECTION
PROCEDURE
1. INSPECT BRAKE VACUUM CHECK VALVE ASSEMBLY
(a) Check that there is ventilation from the booster to the engine, and
no ventilation from the engine to the booster.
If the results are not as specified, replace the brake vacuum check valve
assembly.
...
Toyota CH-R Owners Manual > Steps to take in an emergency: If the electronic key does not operate properly (vehicles with a smart key system)
If communication between the electronic key and vehicle is interrupted
or the electronic key cannot be used because the battery is depleted, the smart
key system and wireless remote control cannot be used. In such cases, the doors
can be opened and the engine can be started by following the pr ...