Are There Any Aftereffects After Repairing a Water-Damaged Transmission?
2 Answers
There will be no aftereffects after repairing a water-damaged transmission. Below are the reasons for water entering the transmission: 1. Coolant entering the automatic transmission: Engine coolant enters the automatic transmission through the transmission cooler. In this case, the automatic transmission cooler should be replaced, and the transmission cooling oil pressure should be checked to ensure it is within the normal range. 2. Rainwater entering the automatic transmission: Mist, rainwater, or car wash water enters the automatic transmission through the vent hole. In this situation, check whether the transmission vent cap is missing. If it is missing, the vent cap should be replaced promptly; otherwise, it is highly likely that rainwater or car wash water will enter the automatic transmission again.
Indeed, there may be lingering issues after repairing a water-damaged transmission, depending on the thoroughness of the repair. If only a simple cleaning is performed without replacing all internal fluids, residual moisture can gradually corrode metal components or electronic parts, leading to gear rust, rough shifting, or even sudden failures. I've seen many cases in the workshop where the transmission initially runs fine after repair, but starts shaking or producing abnormal noises after a few months, sometimes requiring a return to the shop for re-repair. It's advisable to choose an authorized repair shop, insist on a complete transmission fluid replacement and pressure testing, and preferably install waterproof guards to prevent recurrence. Always avoid driving through deep water, and in rainy regions, regularly check fluid conditions—timely maintenance can reduce 90% of risks.
