What is the reason why the rearview mirror of a Mercedes-Benz suddenly cannot automatically fold?
3 Answers
Mercedes-Benz rearview mirror not automatically folding may be due to the battery being disconnected or dead. After setting "fold the rearview mirror when locking the car" and manually folding it, this can cause the automatic folding function to fail. Simply re-adjust it. Related introduction: 1. Folding rearview mirror: The rearview mirror folding function refers to the ability of the car's side rearview mirrors to fold and retract when necessary. 2. Usage scenarios: When passing through narrow sections or entering automatic parking lots, electric folding rearview mirrors are required. 3. Classification of folding rearview mirrors: divided into manual and electric types.
As a mechanic who often works in car shops, I've seen many cases where Mercedes side mirrors suddenly stop folding. The most common issue is a blown fuse; just locate the corresponding one in the engine compartment fuse box and replace it. Motor aging or water-induced short circuits can also cause failure, especially after washing the car in the rain without proper protection. Occasionally, the control module software may glitch—turning the car off and restarting might fix it, otherwise, a diagnostic scanner is needed to read the fault codes. If the button switch contacts oxidize, leading to poor connection, try applying conductive liquid and wiping them. Mechanical jams are rare, but if sand or mud causes blockage, gently manually shaking the mirror can unlock it. Always check the user manual first to troubleshoot and avoid turning small issues into big ones, especially when it involves driving safety. If all else fails, take it to an authorized dealership for inspection.
My Mercedes had a similar issue before – the power-folding mirrors suddenly stopped working. After inspection, it turned out to be just a blown fuse. Replacing it fixed the problem – simple and cost-effective. During routine car washes, excessive water pressure splashing into the gaps can cause short circuits or motor corrosion. If the switch button gets stuck, pressing it repeatedly a few times might help temporarily. When you hear a buzzing sound but no movement, it's likely due to motor failure or gear jamming – try gently pushing the mirror to unlock it. As preventive maintenance, operate the folding function several times weekly. When visiting repair shops, bring detailed problem descriptions to help technicians diagnose faster. Developing good car care habits is key.
