How to Replace the Battery in a Mercedes-Benz Smart?

2 Answers
DeAlexis
07/28/25 3:19pm
Open the engine hood, then locate the battery position on the right side. Remove the protective cover of the battery terminals and the nuts on the fixing bracket. First disconnect the negative terminal, then remove the positive terminal. After removing the surrounding fixing devices and the positive and negative cables, the battery can be taken out for replacement.
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Gordon
08/11/25 10:53pm
When it comes to replacing the battery of a Mercedes-Benz Smart, I have to share my own experience. The Mercedes-Benz Smart is quite compact, and the battery location varies by model, usually under the hood or near the trunk under the seat. First, prepare basic tools: a wrench, insulated gloves, and a pair of goggles for safety. Safety first—make sure the engine is off and the car is parked! The steps are actually simple: first, use the wrench to loosen the connection on the negative terminal and gently remove the cable; then handle the positive terminal; next, carefully remove the old battery. Before placing the new battery, align the positive and negative terminals correctly, then connect the positive cable first and secure it, followed by the negative terminal. When tightening the connections with the wrench, don’t overdo it to avoid damage. Finally, start the car and check if the lights and air conditioning are working properly. As a reminder, when choosing a new battery, make sure it matches the model—wrong size or voltage may cause starting issues. Battery lifespan is typically 3 to 5 years, and temperature affects it greatly, especially in winter when problems are more likely. DIY replacement can save you around a hundred bucks in labor costs, but if you’re not familiar with electrical systems, it’s safer and more convenient to visit a professional shop. The whole process takes about twenty minutes—just have the tools ready.
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