Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.

PRECAUTIONS FOR SERVICING VEHICLE EQUIPPED WITH FORWARD RECOGNITION CAMERA

(a) When running the vehicle on a chassis dynamometer, cover the area in front of the forward recognition camera to prevent it from operating.

HINT:

• The front camera system captures the image ahead of the vehicle using the monocular camera and learns the direction of traffic while driving. When the actual driving situation is different from what is determined by the forward recognition camera, such as when running the vehicle on a chassis dynamometer, the front camera system may learn incorrect information.
• When the forward recognition camera is covered, the message "Front Camera Unavailable Remove Debris On Windshield" is displayed on the multi-information display. The message will disappear and the operation of the front camera system will return to normal after the cover is removed.

HANDLING PRECAUTIONS FOR FORWARD RECOGNITION CAMERA

(a) The forward recognition camera is a precision part. Be sure to observe the following precautions when handling it.

(1) Do not apply excessive force to the forward recognition camera or subject it to a strong impact.

(2) Do not disassemble the forward recognition camera.

(3) Do not change the installation position of the forward recognition camera or modify the surrounding components.

(4) Do not touch the forward recognition camera lens when replacing the forward recognition camera.

HINT:

If the forward recognition camera lens is touched, replace the forward recognition camera with a new one.

PRECAUTION FOR REPLACING FORWARD RECOGNITION CAMERA

(a) If the forward recognition camera has been replaced with a new one or the windshield glass has been removed and installed, it is necessary to perform forward recognition camera adjustment. If the system is turned on without performing forward recognition camera adjustment, DTC C1AA9 will be stored.

Click here

(b) When replacing the forward recognition camera, replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.

(c) When replacing the forward recognition camera, do not damage the camera lens or allow it to become contaminated with foreign matter.

(d) Do not reuse a forward recognition camera that has been dropped or subjected to a strong impact.

HANDLING PRECAUTIONS FOR CAN COMMUNICATION SYSTEM

(a) First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

Click here

PRECAUTIONS FOR COMPONENTS SURROUNDING FORWARD RECOGNITION CAMERA

(a) Be sure to use Toyota genuine front wiper blades.

HINT:

If non-Toyota genuine parts are used, the forward recognition camera view may be blocked, affecting the operation of systems that use the forward recognition camera.

(b) Be sure to replace the wiper rubbers before they wear out.

HINT:

If streaks are left on the windshield glass, the forward recognition camera may not operate properly, affecting the operation of systems that use the forward recognition camera.

(c) Do not install any accessories to the front of the vehicle such as the engine hood or front grill.

HINT:

The forward recognition camera view may be blocked, affecting the operation of systems that use the forward recognition camera.

(d) Do not allow any objects mounted on the roof rack to obstruct the area in front of the forward recognition camera.

HINT:

The forward recognition camera view may be blocked, affecting the operation of systems that use the forward recognition camera.

(e) Keep the windshield glass clean.

HINT:

If the windshield glass is dirty, fogged up or has an oily film, the forward recognition camera may not operate properly, affecting the operation of systems that use the forward recognition camera.

(f) Do not attach any stickers or install any accessories to the area of the windshield glass in front of the forward recognition camera.

HINT:

• If it is necessary to attach a sticker or install an accessory to the windshield glass, do not attach it to the area in front of the forward recognition camera.
• If a sticker or accessory is installed to the windshield glass, the forward recognition camera view may be blocked, affecting the operation of systems that use the forward recognition camera.

(g) Even if a water repellent glass coating is applied to the windshield, it is still necessary to use the wipers if the area in front of the forward recognition camera is covered with water droplets.

(h) If the windshield glass is chipped or cracked, replace it.

(i) When replacing the windshield glass of a vehicle equipped with a forward recognition camera, make sure to use a Toyota genuine part.

HINT:

If a non-Toyota genuine part is used, the forward recognition camera may not be able to be installed due to a missing bracket or the front camera system may not operate properly due to a difference in the transmissivity or black ceramic border.

FEATURES OF FORWARD RECOGNITION CAMERA

(a) The forward recognition camera has characteristics similar to those of human eyes. When the visibility is poor for the driver, the forward recognition camera may not properly detect lane markers or vehicles and objects on the road ahead.

(b) Only the objects in the forward recognition camera detection area can be detected.

(c) The forward recognition camera has a function to detect foreign matter in the area in front of the forward recognition camera.

HINT:

The forward recognition camera may not always detect dirt in the area in front of the forward recognition camera.

(d) In the following situations, the forward recognition camera may not detect objects such as a preceding vehicle, pedestrians or lane makers:

(1) When driving in inclement weather such as heavy rain or snow, dense fog, a sandstorm, etc.

(2) When the view of the forward recognition camera is obscured by steam, sand, smoke, water, snow or dust.

(3) When an intensely bright light, such as the sun or high beams of an oncoming vehicle shine directly into the forward recognition camera.

(4) When the surrounding area is dim, such as at dawn or dusk.

(5) When the headlights of the vehicle are turned off at night or in a tunnel.

(6) The contrast of the area around the vehicle is poor due to snow, etc.

(7) When the ambient temperature is low, the heater is operating with FOOT mode selected.

HINT:

If the upper area of the windshield glass fogs up, the system may not operate.

(e) In the following situations, the forward recognition camera may not detect objects appropriately:

(1) When the vehicle is being driven where a sudden change in brightness occurs, such as at the entrance or exit of a tunnel or in the shade.

(2) When the forward recognition camera is facing upward or downward due to inclination of the vehicle when overloaded.

(3) When the vehicle height is not standard due to modified suspension or non-standard tires.

(4) When the windshield glass is covered with water drops, snow, ice, dirt, frost, dust, oil, etc.

(5) When the windshield glass is fogged-up.

(6) When rain drops, washer fluid, or a wiper blade blocks the forward recognition camera.

(7) An object mounted on the roof rack is obstructing the area in front of the forward recognition camera.

(f) The front camera system may not operate properly in any of the following conditions:

(1) The forward recognition camera is misaligned or damaged due to a strong impact being applied to the camera or the area around it.

(2) The cabin temperature is extremely high.

(3) The cabin temperature is extremely low.

(4) Immediately after the engine is started.