On vehicles with electronic wheel slip control, this light comes on for a short time when the ignition is turned on and then goes out. The lamp flashes while driving if the system is adjusting, i.e. eliminates wheel slip.
When the system is on, the light is on constantly, and also when there is a malfunction in the system. However, it lights up in addition to the ABS light if there is a malfunction in the ABS system.
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