What is the reason for the missing calibration of the Mercedes wiper?

[JaceLee]

Mercedes wiper calibration is missing due to insufficient wiper pressure. Tension adjustment: The wiper mainly adjusts the tightness by adjusting the length of the tension spring or adding a pull ring at the hook. If the wiper pressure is too high, a pull ring should be added at the hook, which reduces the spring's extension and thus the pressure; if the wiper pressure is too low, the pull ring at the hook can be manually adjusted to a smaller size, typically ranging from a few millimeters to a few centimeters depending on the pressure requirements. Fault causes: The causes of abnormal noise, jumping, or incomplete wiping of the wiper may not only be due to the wiper arm being tilted. It could also be due to aging wiper blades, accumulated grease on the glass, or the application of other protective products.

[LaylaAnn]

The other day I was driving my Mercedes to the suburbs when the dashboard suddenly displayed a warning about missing wiper calibration. This issue is most likely caused by a dirty or obstructed multifunction camera at the top of the windshield, as this pre-collision system relies on it to identify road markings. During the rainy season, it's common for tree sap or insect residue to obscure the lens—simply cleaning it with a soft cloth dipped in windshield washer fluid usually solves the problem. If the error persists after cleaning, check whether the windshield has been replaced. Even a 0.5mm curvature deviation in aftermarket glass can throw off the calibration data, requiring recalibration with an OEM part. During calibration at the dealership, specialized tools must be clamped onto the wiper pivot, and the wiping angle is fine-tuned using diagnostic software—something you can't do yourself.

[LeAnderson]

Driving a Mercedes is so annoying with all these electronic system errors! The wiper calibration missing issue usually involves the failure of three interconnected modules: the windshield camera, rain sensor, and body control module. Last week, we encountered a case where the customer got a 'calibration missing' alert right after applying a metalized window film - turns out the metallic coating was blocking the camera's infrared signal. First, try resetting the system: Park in P gear, then press the wiper washer button five times consecutively within 10 seconds after starting the vehicle. The wipers will automatically raise to the service position. Turn off and restart the engine - this works about 60% of the time. If that doesn't help, check the system update history. Some older GLC models didn't have their steering angle sensors properly matched after infotainment system upgrades.

[DiDelaney]

My friend just picked up his Mercedes-Benz C-Class and was startled by a 'Wiper Calibration Missing' alert. Accompanying him for repairs revealed the culprit was aftermarket modifications—workers had removed the wiper arms during PPF installation but failed to torque them back to the specified 25N·m, causing a 0.3mm offset in the position sensor. Three critical reminders: 1) Modification shops must use torque wrenches when handling wipers and perform SVC calibration via Mercedes XENTRY after reassembly; 2) Never force frozen wipers in winter; 3) Mercedes wipers have self-learning parking positions—manually altering the stop position will confuse the system.