I believe that the roll bar light is an issue unto itself and not related to the others. I trust you searched the forum and found the list of error codes. ABS and ASR are related. If the light comes on immediatly with the ignition, the controller may be failing the self diagnosis at start. If the light comes on when the car begins to move, it's possible to have a bad sensor at the tone wheel on one of the axles or even just a very badly rusted tone wheel. You can check the sensor with an ohm meter. It should not read "open". It's just a coil of wire. Remove excess rust on the tone wheels with a wire brush. Check for power to the ABS pump as well as the fluid level in the reservoir.

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