Mercedes-Benz SLK230 water pump leak, battery drain, catalytic converter needed, and squeaking rear wheel bearings on Mercedes-Benz SLK230

Submitted by arniemb · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz SLK230 owners report experiencing issues such as water pump leaks, which can lead to coolant loss and potential engine overheating. Additionally, battery drain problems are common, causing the battery to lose its charge prematurely and requiring troubleshooting to identify the cause. Owners also report needing to replace the catalytic converter, as a faulty unit can decrease engine performance and increase emissions. Furthermore, some owners notice squeaking rear wheel bearings, which can create noise while driving and may indicate the need for inspection and possible replacement. Addressing these issues promptly is crucial for maintaining the performance and longevity of the SLK230.

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Mercedes-Benz SLK230 vehicles with this problem

Average mileage: 116,000 miles
(116,000 - 116,000)

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