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Having installed a coolant low level warning sensor into the old 200 several years ago, and then transferred into the MG during 2010, its been trouble free and very reliable, a really good safety feature, the sensor will activate an instant warning alert. as soon as the coolant tank level for any reason starts to drop from more than below the coolants minimum safety mark.

Coolant loss, monitoring system 200/25/ZR


To install this feature the cooling system did not need to be drained,  off, just a small amount syphoned out while the tanks are swopped over. A coolant loss alert was then needed to be added, the options could either be a warning light or piezo buzzer. 

Each of the modules are a simple fit, so fitted both. the piezo buzzer was placed well inside dashboard its loud enough to hear, and with the warning light located in the spare bulb holder, which is located very conveniently directly under the vehicles temperature gauge. 

Coolant loss, monitoring system 200/25/ZR


Displacement of coolant will occur more frequently if when driving off road, so will momentarily activate the coolant levels warning sensors with 'single' notifications. Taking note 'continuous' warnings from each of the sensors, could be an early stage of a possible coolant loss.

In an event, a reasonable amount of coolant would still be in circulation, allowing time to park up and investigate. not relied upon as a fit and forget. visual checks on coolant level, and hoses, are still carried out along with other routine vehicle checks and servicing.

Attempting to drill a hole in the original tank to accept the sensor, as already asked, is not really a good idea on a pressurised vessel such as the coolant tank, The parts needed for this project, were a replacement coolant tank RPCF000160, and a coolant reed sensor RPCJ000040. Coolant tank can also be seen, showing the two small reed sensor wiring connectors, which are fed into the cabin. 

Rover 200/MG-ZR Technical and Information Pages (c) 2004-2018.

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