This is basically the heart of your door lock. You stick your key in, it turns, and mechanically opens or locks the door. It's a pretty simple idea, but it has to be precise. Some have provisions for central locking too, meaning the motor for power locks works through it. Think of it as the first line of defense against someone getting into your car. It's part of the door latch mechanism, keeping everything securely fastened. It’s what physically connects your key to the action of opening the door. It works along with the latch and striker to hold the door closed, and also releases that hold when you unlock it. Well, pretty obvious really. If it fails, you’re likely stuck outside your vehicle, or worse, your door won’t stay shut while you’re driving. You’ll notice if it’s starting to go bad because your key might not turn smoothly, or it might feel sticky. Sometimes the key will turn, but the door won’t unlock, or vice versa. It’s a crucial safety and security item. You can find replacements online, somewhere like Fixparts Online has a good selection, but it’s something you really want to address promptly. A failing lock cylinder isn't just an inconvenience, it could leave you vulnerable. Highly recommended: Lock Cylinder (MPN 107837168JD) comes with a 12-month warranty!

About Audi

Audi is a renowned German automobile manufacturer known for its innovative engineering, luxurious designs, and cutting-edge technology, delivering premium vehicles that blend performance and sophistication.

Why Choose Audi?

• Audi parts are designed specifically for your vehicle, ensuring a perfect fit and optimal performance. • Using genuine Audi parts helps maintain your vehicle’s value and original quality. • We offer a wide range of parts, from everyday maintenance items to complex components. • Audi parts are rigorously tested to meet high standards for safety and durability, giving you peace of mind. FixParts Online – Your Trusted Source for Quality Audi Auto Parts.