Mercedes-Benz CLK320 transmission issues with multiple torque converter replacements and potential radiator problems on Mercedes-Benz CLK320

Submitted by SFDave · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz CLK320 owners report experiencing recurring transmission issues, particularly involving multiple torque converter replacements, which may indicate underlying transmission problems that require attention to prevent future complications. Additionally, these owners have noted that faulty radiators, especially those manufactured by Valeo, can lead to coolant mixing with transmission oil due to internal seal failures. This contamination can result in significant transmission issues and may necessitate both radiator and transmission repairs. It is crucial for CLK320 owners facing these challenges to seek prompt resolution to avoid further damage and costly repairs. Regular maintenance and inspections are recommended for early detection and prevention of these problems, and consulting with a qualified mechanic or dealership is advisable for accurate diagnosis and effective resolution.

5 people reported this problem
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Mercedes-Benz CLK320 vehicles with this problem

Average mileage: 95,500 miles
(50,000 - 150,000)

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