Reverse Automatic Braking (RAB) Indicators

Reverse Auto Brake

These are Reverse Automatic Braking (RAB) System Indicator and Backup Collision Intervention System (BCI) symbols. These simple text symbols indicate the system condition. Each holds the system acronym. The first indicates a fault in the system that will require a qualified service shop. The other two indicate that the system has been switched off.

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The picture symbol is used by some manufacturers and is seen if the system is unavailable. The sensors may be dirty, but is the light remains after cleaning, a qualified service shop will be needed.

RAB is designed to help avoid collisions or reduce collision damage when the vehicle is in reverse. When functioning properly, if an obstacle is detected behind the vehicle while reversing, the system will sound a warning and may activate the vehicle’s brakes automatically. The system detects objects using sonar sensors installed in the rear bumper.

One manufacturer using the system (Subaru) goes so far as to note that if need be, the system can be overcome by pressing the accelerator to cancel the system function. The example used was being trapped on a railroad crossing with a crossing gate behind the vehicle.

Glad they thought of it…

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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the  use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.

These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.

Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.

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