Peugeot Boxer Thermostat Problems

The Peugeot Boxer, a commonly used van, has recently been a topic of discussion for many of its users. The center of the conversation revolves around a particular warning light on the dashboard, one that depicts a thermometer. With ambiguous indications in the vehicle handbook and varied experiences from users, the question arises: Does this light signal a ‘high temperature’ issue or a ‘low coolant’ level?

A Light of Multiple Meanings?

For one driver, the warning light made an appearance after a 50-mile trip, notably without any prior issues, even after being out in the snow. Surprisingly, despite the warning light suggesting a ‘high coolant temp’ in the handbook, the temperature gauge seemed normal, and the radiator was relatively cool. It wasn’t until the coolant was topped up from the ‘min’ mark that the warning light disappeared. This experience begged the question: Could the light also indicate a low coolant level?

Another user shared a similar situation. While traveling on a hot day, particularly on the winding Route de Napoleon, the light briefly lit up, even though the coolant system seemed perfectly fine. When inquired at a local Peugeot garage, the professionals pointed towards the combination of high altitude and heat. They also mentioned the possibility of the warning light triggering even when the cooling fans are operational.

Handbook Confusions

Further confusion stems from the Peugeot Boxer’s handbook. It appears that the dashboard light indications may vary depending on the vehicle’s specification. Moreover, different sections of the handbook provide contrasting explanations for the same light. In one instance, the light points to a high temperature, while in another, it signals a ‘low level’ coolant.

A Possible Explanation and Solution

One insightful comment suggested that if a Peugeot Boxer remains stored for an extended period, it might develop an air lock that positions itself on the coolant temperature sensor. This is supposedly the cause behind the warning light indicating engine overheating. A potential fix involves revving the engine, speeding up the water pump, and, in turn, displacing the air lock. If the problem persists, it may be wise to replace the sensor. It’s important to note that if both the panel gauge and the overheat light sensors highlight an overheat situation simultaneously, then there might be a more significant underlying issue.

Conclusion

For Peugeot Boxer owners, it’s essential to be aware of this thermostat warning light and its potential meanings. While the van’s handbook provides a basis for understanding, real-life experiences suggest that there could be multiple reasons for the light’s appearance. Regularly checking coolant levels, ensuring the engine doesn’t overheat, and possibly consulting with a professional are good practices to prevent any unwelcome surprises.