The ABS, ASC, and "handbrake lights" are often simultaneously activated on the BMW 3 E46 dashboard. This is usually due to the failure of the ABS sensor or the damage to one of the sensors. If the ABS sensor is to be replaced, if the contact is contacted, contact an electro specialist on the issue of the resupply of contacts. If the problem is something else, it is better to contact the BMW technical center.
