On models equipped with ABS, when the ignition is turned on, this indicator lights up to check the operation. If it doesn't, replace the light bulb (as already described). When the engine is running, the indicator should turn off.
The indicator is also on if the ABS system has been disabled by the main switch (installed on models manufactured before June 92).
If it flashes while driving, it means a malfunction in the anti-lock system. Should check the ABS in the workshop (see also chapter «Anti-lock braking system»).
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