Head lights

[Justinr]

Hi there guys have anyone got an Audi A3 12 plate and are suffering with bouncing headlights when driving over uneven road

[Trevor]

Hi Justin,

It could be a suspension levelling system fault (if fitted).  See article below:

Auto Leveling Sensor

If you recently lowered your car, or hit a really hard bump to your drivers side front or rear wheel, this could be the problem. For cars equipped with auto-levelling sensors, the sensors themselves are located in the wheel wheels near the lower control arms so they can adjust the headlight aiming based on the suspension load. For some people when they lower their car, the sensor is out of range as the suspension has been altered. For others, a hard bump to the front wheel could potentially break the sensor or cause it to become unplugged. To access the sensor, take off your drivers side front wheel and look near the bottom of the suspension. The sensor bridges the lower control arm to the body and looks like this:

If it is damaged or the wires have frayed, you can order a new one here: http://www.ecstuning.com/Audi-B6_S4–V8/Lighting/Headlights/Leveling/ES440960/. If you are lowered, you may just need to bend the upper part of the bracket so the top of the sensor is higher again. Once you have inspected and either repaired or replaced the sensor, you will need to recalibrate it using vag-com. Follow this DIY for instructions on how to do that: http://www.a4mods.com/index.php?page=webcontent/pages/autolevel.html&category=6