As many Mercedes Benz E320 Bluetec has transmission sealed (not dipstick) will have any alarm on multi-function display to let you know if transmission fluid is low level?
I am assuming that my particulate filter is going clogged. If so should I get any alarm in the multi function display?
I am noticing a smell of exhaust gases coming into the cabin even with the windows closed and A/C not turned on. This smell is even strong with the cold weather. I checked all around of the engine and found no oil leakage or any other lose pipe. Any suggestion to what to do?
Thanks

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Nyck - TX - USA