A friend of ours has a late model E class wagon...I think it may be 2011. She texted me about getting a low coolant message. Since she was in the area I told her to stop by so I could take a look.

The reservoir seemed fairly full. But when I removed the cap I noticed that the level was just below the top of the two electrical prongs in the reservoir. Am I correct to assume that coolant needs to cover completely those two prongs in order for the sensor not to be tripped?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 178k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 75k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife