Break and ABS light showin on my dash board. on 1997 BMW 740iL

Break and ABS light showin on my dash board. Had an accident last year - Snow chain wrapped around inside my Right Rear Tire.

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1 answer
It may be a damage wheel speed sensor if the snow chain came adrift. Look for damage to the wheel speed sensor harness. Check the brake fluid level in the brake fluid reservoir. Low brake fluid may be due to brake normal pad wear or a sign of a fluid leak somewhere.