This part physically secures your door – it’s what the latch and bolt mechanism are housed in. It handles everything from locking and unlocking with your key or remote, to allowing the interior handles to open the door from inside. It also works with the child safety locks, if your vehicle has them, and often includes the electrical connections for things like power locks and alarm systems. Basically, it’s the central point for controlling access through that door. Think of it as a key component of your car’s security system and a fundamental part of the door assembly. It directly affects how well your door stays shut while driving or parked, and obviously, how secure your vehicle is against theft. It’s also crucial for safety – a faulty lock could mean a door might not stay closed during a collision. It’s kind of like the gatekeeper for that door, controlling everything. Well, a working door lock is pretty vital, wouldn’t you say? You’ll notice if it starts acting up – doors might not lock or unlock reliably, the key might feel loose, or the interior handle might be difficult to use. If it fails completely, you could be left with a door that won’t stay shut while driving or a door you can’t get open from the inside in an emergency. It acts like a shield protecting the contents of your car and keeping you safe inside. If you’re having issues, it's a pretty important thing to address quickly. You can find replacements pretty easily online; Fixparts Online has a good selection of these, but plenty of places do. Your satisfaction is our priority: Door Lock (MPN A4517401100) includes a 12-month warranty!

About Mercedes-Benz Passenger

Mercedes-Benz Passenger is a prestigious German brand known for its luxury vehicles that combine advanced technology with refined design. Originating from Germany, this brand represents the pinnacle of automotive sophistication and performance.

Why Choose Mercedes-Benz Passenger?

• Keep your Mercedes-Benz performing its best. Our parts are specifically designed and tested for your vehicle, ensuring a perfect fit and reliable performance. • Protect your investment. Using genuine Mercedes-Benz parts helps maintain the value of your vehicle and avoid costly repairs down the road. • Quality you can trust. We use top-of-the-line materials and rigorous testing standards, so you can drive with confidence. • Expert support. Our team is here to help you find the right parts for your vehicle, with access to detailed information and technical expertise. Performance you can rely on – Mercedes-Benz Passenger parts from FixParts Online.