Can you tow an automatic car with the engine running

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Can You Tow an Automatic Car with the Engine Running?

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Understanding Automatic Transmissions

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Automatic transmissions, unlike manual transmissions, do not require the driver to shift gears manually. Instead, they use a series of gears, clutches, and a fluid-filled torque converter to automatically select the appropriate gear based on driving conditions. This convenience comes with certain limitations, however.

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Transmission Lubrication

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One critical aspect of automatic transmissions is their reliance on fluid lubrication. When the engine is running, the transmission fluid pump circulates fluid throughout the transmission to lubricate and cool its components.

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Towing an Automatic Car with the Engine Running

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Short Distances at Slow Speeds

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In certain situations, towing an automatic car with the engine running can be permissible:

* **Short distances:** If the tow distance is short (a few hundred meters or less) and the speed is slow (below 25 km/h), the transmission may have sufficient fluid circulation to prevent damage.

* **Flat terrain:** Towing on flat terrain minimizes the strain on the transmission. Avoid hills or inclines.

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Extended Distances or High Speeds

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However, towing an automatic car with the engine running for extended distances or at high speeds is **strictly not recommended** and can cause severe transmission damage:

* **Inadequate fluid circulation:** Prolonged towing deprives the transmission of adequate fluid circulation, leading to overheating and component failure.

* **Pump damage:** The transmission fluid pump is not designed for extended periods of towing, and can become damaged due to excessive heat buildup.

* **Overheating:** The buildup of heat within the transmission can cause premature wear and tear on its components, reducing its lifespan.

* **Warranty voiding:** Towing an automatic car with the engine running may void the transmission warranty.

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Exceptions: Flat-Towing Capable Vehicles

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Some specialized vehicles, such as Jeep Wranglers or certain RVs, are equipped with a flat-towing mode that allows them to be towed behind another vehicle with the engine running. However, these vehicles are specifically designed with modifications to ensure proper transmission lubrication during flat towing.

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Recommended Towing Procedure

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To avoid transmission damage during towing, it is recommended to:

1. **Put the car in neutral:** Allow the transmission fluid to circulate but avoid engaging any gears.
2. **Release the parking brake:** Ensure the wheels are free to roll.
3. **Use a tow dolly or trailer:** These devices lift the drive wheels off the ground, eliminating the need for the transmission to circulate fluid.

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Conclusion

Towing an automatic car with the engine running is not recommended for extended distances or high speeds. Doing so can lead to severe transmission damage and voiding of the warranty. Instead, use a neutral position or a tow dolly/trailer to preserve the transmission’s integrity. If you are unsure about the towing procedure for your specific vehicle, consult your owner’s manual or seek professional assistance.