![]() ![]() By doing this, the solenoid controls the movement of the camshaft gear outward or inward, effectively controlling the timing of the valves. A long coil of wire wrapped several times, called a solenoid, controls the amount of oil pressure that is applied. The Vanos system that you likely have in your BMW uses oil pressure to control the position of the intake and exhaust camshafts using a gear on the Vanos actuator and on the camshaft. Before discussing how you can spot a malfunctioning Vanos system, let’s first explain how the BMW Vanos system works. There are countless fault codes that could be displayed on your vehicle’s computer that could indicate that there is an issue with your Vanos system. There are different types of Vanos systems which vary depending on your BMW’s model. Essentially, the Vanos system helps engine timing adjust so that your vehicle can deliver both low-end torque and high-end power, rather than having to settle for one option or the other. The BMW Vanos system is similar to the variable valve timing mechanism that is found in Honda vehicles. ![]() This system, in particular, is an important part of any BMW’s engine computer. The BMW Vanos system was implemented in many BMW models starting in the early 1990s, in order to give BMW cars the ability to variably adjust valve timing, which translates to better power and range. In this case, it’s important to understand what is going on inside your vehicle and that seeking service from a trained European vehicle mechanic is important to avoid long term damage to your vehicle. If you’ve noticed a loss of driveability, decreased horsepower and poor fuel economy, there’s a high chance that your BMW could be experiencing the symptoms of a bad Vanos Solenoid. ![]()
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