What's the cost for a 2016 mercedes c300 key fob battery replacement?

If You want to know how much it costs to replace the key fob battery on the 2016 Mercedes C300, I can help You with that. If You replace the battery Yourself, You can expect to pay up to $10 for just the battery alone. I do not recommend takeng the key fob to Your dealership since they will charge You an arm and a leg to replace the battery. I can help You replace the battery. What You will need to do is slide over the black button on top of the key fob. The metal key should now be released so just pull it out. Now, You will insert the tip of the metal key into the slow that it just came out of only enough to put pressure on the small slab holding the back key fob cover to the body. When it pops out, You will have access to the battery.