What are the possible causes of the failure in the tail lights of my BMW X3?

Many times the tail lights in your BMW X3 may experience failure because water vapor and moisture may get inside the housings. Old bulbs can also point to this conclusion. There can be other reasons associated with other parts, like batteries or wiring. Corroded sockets also contribute to the problem of malfunctioning tail lights.
My headlights are not working. Is it safe to drive my car without a headlight in Delhi? Or should I get the car light replacement done?

No, it is not safe to drive a car anywhere without headlights. Driving without a headlight can increase the chances of accidents, which is not safe for you. There are many reasons why they get defective, you should check for them and get your car light replacement done at your nearest workshop possible.
Do Delhi's highly humid conditions require frequent car light replacement?

High humidity levels are possible in Delhi, and this can result in moisture accumulation inside the car lights of BMW, compromising visibility. If these fogging occurrences are continuous, then this could be a result of seal failure. It is advised to consult a specialist about defogging treatments or the need to replace car lights in this case.
Where can I get car light replacement services if the interior lights of my BMW X3 car are not functioning in Delhi?

Some of the most common reasons that your BMW’s interior lights are not working may include instances like blown or burnt-out bulbs that cause the issue. The switches inside your BMW X3 may have become defective, or there could be electrical problems with the interior lights. You can access car light replacement services at the GoMechanic workshop in Delhi.