To install new windshield wipers on a 2019 CLA250, lift the wiper arms, release the blade connectors, and swap in MB-compatible blades using the correct adapters, then lower the arms and test the sweep. This guide covers what you’ll need, step-by-step installation, and tips to ensure a secure fit and clear visibility.
What you’ll need
Gather these items before you start. The CLA250 uses MB-approved blades or aftermarket blades with the correct adapters. Check the packaging or your owner’s manual to confirm the exact blade lengths and adapter type for both the driver and passenger sides.
- Replacement windshield wiper blades designed for your 2019 CLA250 (OEM or compatible aftermarket with the correct adapters)
- Adapter kit if your blades require a specific MB adapter
- Clean microfiber cloth for wiping the blades and the windshield edge
- Optional: gloves to keep your hands clean and protect the blade surfaces
With these items prepared, you’re ready to begin the installation process.
Step-by-step installation
Follow these steps to remove the old blade and install the new one. The basic procedure is similar for most Mercedes wiper arms: lift, release, swap, re-seat, and test.
- Park the car on a dry surface, turn the ignition to access the wipers, and move the wiper stalk so the blades are away from the glass. Then turn the car off for safety.
- Gently lift the corresponding wiper arm away from the windshield until it stays in a raised position.
- Identify the blade’s connector on the arm. Press the release tab on the blade connector (or the adapter) and slide the old blade off the arm. If your setup uses a pin or hook system, follow the specific release method for that connector.
- If your replacement kit includes adapters, attach the correct adapter to the new blade as indicated by the blade packaging or the kit instructions.
- Attach the new blade to the wiper arm. Slide it into the connector until you hear or feel a click that confirms it’s secured. For Sure-Click or similar MB systems, you should feel a positive click when the blade is locked in place.
- Lower the wiper arm back onto the windshield gently, ensuring the blade sits flat and evenly against the glass.
- Repeat for the passenger side if needed. In some cases, replacing only the driver-side blade is sufficient, but many owners replace both for even performance.
- Turn on the ignition and run a brief test sweep to verify the blade contact and alignment. Check for gaps, streaks, or noise.
Following the steps above should yield a secure fit and a clean wipe. If you notice any misalignment or skipping, re-check that the blade is fully seated and that the adapter is properly engaged.
Testing and care
After installation, perform a wipe test in a controlled environment. Ensure the blades contact the full length of the windshield and that there are no streaks or skips. Clean the blade edges and the windshield edge if you see residue or debris that could hamper performance.
Common issues and fixes
If you encounter streaking or chatter after installation, consider these quick checks: confirm the blade is fully seated in the arm’s connector, verify you used the correct adapter for your blade, clean the blade and windshield edge, and, if the blades are worn, replace them with a fresh set.
Summary
Replacing the windshield wipers on a 2019 CLA250 is a straightforward task you can perform with basic tools and the correct blades/adapters. Gather the right blades, release and remove the old blades, attach the new ones with the proper adapters, reseat the arms, and test the wipe to ensure clear visibility. Regularly inspecting and replacing wiper blades at the first signs of wear helps maintain good visibility in all weather conditions.