Honda City Prosmatec Automatic Transmission Leak Issues

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Honda City Prosmatec Automatic Transmission Leak Issues

Many Honda City Prosmatec automatic transmission owners report leaks after 80,000–100,000 km.
What are the typical causes in Prosmatec variants, and how can they be resolved?

Lubaba asked on 26 Feb 2025 10:41:55 am

1 Answer

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Car Mechanic Expert - on 26 Feb 2025 10:47:39 am

Common Causes:

Worn Seals and Gaskets: In automatic transmission Prosmatec variants, the seals and gaskets around the transmission pan o r the fluid lines can deteriorate after extended use, typically after 80,000–100,000 km.
Transmission Cooler Line Leaks: These are common in automatic models and can cause fluid loss if not addressed.
Loose o r Cracked Transmission Pan: The transmission pan may crack o r become loose, especially if subjected to external impact e.g., road debris.
Overheating: Excessive heat can damage the seals o r cause the transmission fluid to break down, leading to leaks.

Resolution:

Regularly check the transmission fluid levels and ensure that the fluid is in good condition.
If leaks are detected, the transmission pan gasket, cooler lines, o r seals should be inspected and replaced.
Keep the cooling system in good condition to prevent overheating, which could exacerbate leakage.