Brake assist light comes on when put in reverse .

Hello, I am not certain what the "brake assist" light is, and why it comes on. I would recommend visiting a local shop near so you can show them what you are seeing. They can advise if it is normal for if it needs testing for a concern. Brake assist in the workshop manual is described as the vacuum powered brake assist for the vehicle. I would recommend a first hand discussion near you. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.