A light that comes on is not a good omen. We can believe that it is just a dysfunction coming from sensors . However, it is essential to pay attention to it. What is the role of ABS? Why does the light go on? What to do? We will try to elucidate all of these questions, so you can get behind the wheel of this smart fortwo with confidence.indicator-abs-smart-fortwo

What is ABS on a smart fortwo

ABS means Anti Blocking System . It is a system which will make it possible to improve the braking system, among other things for sustained brake application. Before the creation of ABS, the brake pedal was simply linked to the pads. When pressed, the pads closed on the discs. The trouble with this system is that there can be a risk of slippage. Using sensors, ABS assesses braking. Instead of maintaining the discs, the pressure will vary a certain number of times per second, thus making it possible to prevent a blocking total wheels of your smart fortwo. No skidding, and braking becomes more efficient.

smart fortwo: why the ABS warning light is on

When the ABS warning light comes on, there is no doubt that your smart fortwo has a malfunction. As on all the other indicators, it is quite common that it just concerns a malfunction of electrical connection. That said, it's better to be sure.

False contact

Reassemble the ABS probe lines of your smart fortwo and measure the electrical current using a multimeter . When one of them does not have the same value as the others, it means that there is an electrical fault. Follow the wiring, if you discover a connection fault you will have to repair it. When a wire is damaged, you will have to replace it.

A sensor problem

This is of course a fairly frequent malfunction for a smart fortwo. Your sonar may be sending the wrong message. In this situation, it will suffice to replace the sensor in question. You will be able to test the sensors using a oscilloscope .

A problem with the hydraulic block

The ABS of your smart fortwo works thanks to a mechanism hydraulic , which will manage the force of the brake pads. When this mechanism is defective, replacement of the ABS unit is generally essential. When it's a block malfunction, it usually feels when you brake.

Conclusion

An ABS warning light that stays on can come from very different reasons. Either a sensor malfunction, an electrical fault. Assuming your ABS block is not functional, you will probably have to change it. And this operation is relatively expensive, for a smart fortwo or for any model of automobile. It is essential not to neglect an ABS warning light, for obvious safety reasons. Leave a comment if this special ABS witness file has ever been useful. Good road!