How to Replace the Battery in a Mercedes-Benz R280L Key?

1 Answers
OAliyah
07/29/25 4:20pm
Mercedes-Benz R280L key battery replacement method: First, push up the marked switch, remove the mechanical key, open the key casing, then pry out the old battery and replace it with a new one. Below are precautions for replacing the battery in a Mercedes-Benz R280L key: 1. Do not touch the circuit board or battery terminals. 2. The remote is waterproof. However, if it gets wet, dry it immediately. 3. When replacing the battery, ensure there is no dirt, grease, or other foreign matter on the electrode contacts. 4. After replacing the battery, check to ensure all functions of the smart key are working properly.
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