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How to diagnose and fix a coolant leak in an Audi A4?

I noticed a small puddle of green liquid under my Audi A4 and I suspect it may be a coolant leak. How can I identify the source of the leak and fix it?

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The first step is to check the coolant level and see if it's below the minimum mark. If so, top it off with the appropriate coolant mixture according to your Audi A4's specifications. Next, inspect the radiator, hoses, and water pump for any visible signs of leakage. If you can't find the source of the leak, you may need to take your car to a mechanic for further diagnosis.

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One potential cause of a coolant leak in an Audi A4 is a damaged radiator. You can try using a radiator leak sealant to temporarily fix the issue, but it's important to get the radiator replaced as soon as possible for a long-term solution.

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