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We recently lost all gauge operation on our MY2018, although the vehicle was still drivable post a jumpstart. The main 12V battery needed to be replaced and it's been fine since.

Myriad modern electronics require a very "clean" power supply and therefore a marginal battery often causes this and other electrical "gremlins."

It's the second time the battery on this FL vehicle has been replaced (first under warranty at just over one year post delivery). However this was a much lesser used vehicle due to COVID absence. It was on a good battery tender, however vehicles really prefer regular use. The Aux battery still works tho'.

Our more often used MA 2018 GLA's main battery has never been replaced. The Aux battery on this one is also still viable. 🤷‍♂️
 
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