What are the reasons for the headlights of the Volkswagen Lavida not working?
3 Answers
The reasons for the Lavida's headlights not working include car bulb damage, relay failure, etc. Here are the specific details about why the Lavida's headlights may not work: 1. Severe battery drain: After the headlights are turned on, the battery needs to work together with the generator to supply power. Therefore, during the first two hours of driving at night, the brightness of the headlights is normal. However, after that, as the battery can no longer continue to supply power, the headlights will gradually dim. 2. Overheating of wires increases circuit resistance: The luminous intensity of the headlights decreases. In severe cases, the headlight circuit may short-circuit due to the melting of the wire insulation layer, and even lead to circuit burnout or car fire accidents. 3. Contacts in the circuit, such as the light relay or combination switch, become corroded or stuck: This prevents the circuit from being disconnected or connected. 4. Excessive use of electrical appliances and prolonged generator overload: The generator's diodes and coils may burn out, causing the generator to stop producing electricity.
Hey buddy, my Lavida had the same issue before, most likely due to bulb aging. When I opened the lamp cover, I saw the filament inside was burnt black. However, it could also be a fuse problem. Open the fuse box under the lower left side of the driver's seat, locate the 10-amp blue fuse labeled with the headlight symbol, pull it out and check if the metal wire inside is broken. If the light flashes once and then goes off when turned on, there's a high chance it's a loose connection in the circuit. You should focus on checking the connector behind the lamp socket. Last time, I found the copper tabs in the connector were oxidized. For older Lavidas, the contacts under the headlight switch knob are prone to wear, and in this case, you'll need to replace the entire assembly. Honestly, if you can't fix it yourself, it's safer to go to a 4S shop. Driving at night without lights is really dangerous.
Just helped my wife fix the headlights on her Lavida over the weekend. Here are two emergency tips for you: Open the hood and wiggle the bulb—if it flickers, there's a poor connection. Also, check the battery voltage; lights will dim if it's below 12 volts. Focus on the black fuse box near the driver's footwell—fuse #32 is for the left headlight and #33 for the right. If the bulb burns out again soon after replacement, it's likely due to unstable power supply from the alternator. The Lavida's voltage regulator is mounted on the side and prone to water seepage. Oh, and if you've upgraded to LED lights, they burn out more easily—the stock halogen bulbs are more durable. If these checks don't solve the issue, the BCM control module might be water-damaged, which requires professional diagnostic equipment.
