98 Gs300 With Problems Audible Alarm With Lights On Dash

[daktana]

I recently had the battery changed on my 98 GS300, the mechanic said there was a short to the headlight as the bulb was not on and after repairing the short, the lamp now works with that bulb. However, the day after, when I start the car, there is a rather loud audible alarm (beep) and the VSC, VSC OFF, BRAKE and the VBS lights are on the dash. The car operates fine, no problems that I can tell, I dont know if the brakes are working properly, keep in mind it is now 12 below and any car reacts differently. This happened before when another garage changed the battery and I took it back....I dont know what they did, I don't know if they know what they did, but it quit reacting like that. We don't have a Lexus dealer in our town, but don't know what to do now, any suggestions?