How long does a front end alignment take .also .. on 2004 BMW 325i

Will it make dsc n brake light indicator go off been told it could be a cause
If not how much does the dealership charge to run on machine ?

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1 answer 1 comment
approx 1 hr depending on if any parts are needed
I was literally just told it would take 3 hours to do an alignment that's gotta b a joke n rediuclous for how much its costing .