Airbags, ABS & Stability Control
The core safety systems on every new car — how airbags, anti-lock braking and electronic stability control work and why they matter.
Three systems form the foundation of modern car safety. Airbags cushion the occupants in a collision and work together with seatbelts, which is why they are called supplementary restraints. Anti-lock braking, or ABS, prevents the wheels from locking under hard braking so the driver keeps steering control. Electronic stability control, or ESC, senses when the car is beginning to skid and brakes individual wheels to bring it back into line. All three are standard or near-standard on new cars sold in South Africa.
What differs between models is the number and placement of airbags and the sophistication of the electronics. A budget car might carry two front airbags; a well-specified family SUV can have six or more, including side and curtain bags that protect the head in a side impact or rollover. Knowing what each system does helps you weigh one car against another on more than the headline star rating.
Airbags, ABS & Stability Control — questions
The questions people ask about airbags, abs & stability control, answered plainly.
How many airbags does a new car need?
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Front airbags for the driver and passenger are the minimum, and side and curtain airbags add real protection in side impacts, which are among the most dangerous crashes. Six airbags, meaning front, side and curtain, is a sensible benchmark for a family car. More is not automatically safer, but curtain airbags in particular make a measurable difference for rear-seat passengers.
What does electronic stability control actually do?
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It monitors steering input, yaw and wheel speeds many times a second. When it detects the car turning less or more than the driver is steering, it brakes one or more wheels and can reduce engine power to bring the car back on course. It is the most effective single safety technology since the seatbelt, and it is especially valuable on wet roads and gravel.
Why does the brake pedal pulse when I brake hard?
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That pulsing is the ABS working. It rapidly releases and reapplies the brakes to stop the wheels locking, which lets you steer around an obstacle while braking. The correct response is to keep firm pressure on the pedal and steer where you want to go. Do not pump the brakes as older cars required; the system does that for you.
Do airbags need maintenance or replacement?
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Airbags do not require routine maintenance, and modern units are designed to last the life of the vehicle. The airbag warning light on the dashboard should go out shortly after starting; if it stays on, the system has detected a fault and the airbags may not deploy. That is a warranty matter for the franchise dealer, not something to leave for the next service.
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