ABS and Hand Brake Light ON?

I got my front suspension checked from a garage, soon after that I found out the ABS light and Hand Brake light in the dash board lit up. On and Off I get the Service light and Stop light but after a short wile they two disappear and ABS + Hand brake light stays.

I'm sure its not because of a problem with brakes..as it happened soon after the front suspension check.

Can anyone hlep me?