RE: 98 ML320

This is very odd - we had a lot of rain lately.. and I hit a few big puddles

and the ETS light (Triangle ! ) did not go on.. even after diving in
intentionally.

It lights up during start up, and was just in at the dealer, as well as a

100k service in May..

Fuses look fine, cruise control works.

Any thing I can check or do to test it or even force it to come on?? How do
I know if it is working??

Huge puddles used to work.

Thank you!