Understanding the Coolant Engine Light: A Guide to Troubleshooting

The coolant engine light on your car's dashboard can be frustrating, especially when you're unsure what it means or how to resolve the issue. In this article, we'll delve into the possible causes and solutions for a common problem: the aux pump's two hoses and their relation to the coolant level.

Many car owners have experienced the phenomenon where the coolant level in the tank drops by 2-3 inches when starting the engine in the morning. This is often followed by an increase in coolant level after driving, sometimes resulting in overflow from the expansion tank. So, what's causing this? Is it a leak or something more sinister?

The answer lies in understanding the aux pump and its role in the cooling system. The aux pump, also known as the auxiliary cooling pump, is responsible for circulating coolant through the engine and transmission cooler. When the engine is running, it helps to maintain optimal temperatures and prevent overheating.

One common issue with the aux pump is a faulty seal or gasket, which can cause coolant to leak into the engine or transmission. In severe cases, this can lead to serious damage, including transmission failure. Therefore, it's essential to inspect the radiator and surrounding components for any signs of leaks or damage.

When troubleshooting the coolant engine light, there are a few things you can do:

1. Check the coolant level regularly: Monitor the coolant level in your tank and adjust accordingly.

2. Inspect the aux pump and hoses: Look for any signs of leaks or damage around the aux pump and its hoses.

3. Search for bluish (yellowish) coolant stains: If you notice any unusual stains under the hood, it could indicate a leak.

4. Check for thick whitish-bluish smoke: When the car is running, if you see thick smoke coming from the rear exhaust, it's likely due to coolant leaking into the engine.

In some cases, the Resynch process can resolve the issue by adjusting the cabin heater-cooling system. Press and hold the Recirculation button and Front Defroster together until the lights start blinking.

To summarize:

* The aux pump plays a crucial role in maintaining optimal coolant levels.

* A faulty seal or gasket can cause coolant to leak, leading to serious damage if left unchecked.

* Regular inspections and adjustments can help prevent issues with your car's cooling system.

* If you're experiencing problems with the coolant engine light, don't hesitate to seek professional assistance.

By understanding the aux pump's role in the cooling system and being proactive about maintenance, you can avoid costly repairs and keep your car running smoothly.

Coolant engine light