What Causes the Coolant Refill Prompt in Mercedes-Benz?

[McPatrick]

Common causes of antifreeze leakage in Mercedes-Benz vehicles include: aging or damage to the cylinder head gasket, aging or damage to the return hose, damage and leakage in the auxiliary water tank, and leaks in the sealing rings on the coolant pipes, which may be accompanied by an increase in engine oil level. How far can you drive when prompted about low coolant: The reduction in coolant varies for each individual—some due to normal consumption, others due to leakage. Therefore, it's impossible to determine exactly how far you can drive. However, continuing to drive after the refill prompt will likely trigger a "coolant high-temperature warning," followed by an "engine high-temperature warning." If you suddenly receive a "refill coolant" prompt while driving and don’t have any spare coolant on hand, you’ll have to keep moving forward. In this case, pay close attention to high-temperature warnings. Once the "coolant high-temperature warning" appears, pull over and take a break, then drive a short distance and stop again until you reach a repair shop. Throughout this process, always monitor whether an "engine high-temperature warning" appears. If it occurs within a very short distance, it’s best to wait for roadside assistance.