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Discussion Starter #1
DSR Inoperative .

I stopped at the light, while waiting I notice my dashboard broke, headlight symbol light flashing and DSR Inoperative. Has anyone had this issue or problem before and how did you fix it?
 

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Where are you located, what model and year GLA do you have? We have a worldwide membership with a variety of GLA derivatives, so pinning down yours helps a lot for answers. (You can add that data to display each time you post from the User CP link on the upper right of most browsers.)

Did the same issue recur after shutting down and restarting, in effect a "reboot"? That often is the remedy when an event like this or other unexpected dash issue occurs, as unnerving as it can be.
 

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Discussion Starter #3
Long Island, NY. 2016 GLA250 4MATIC. Dashboard high beam headlight symbol, DSR Inoperative stay on. The radio keep ressetting now I have error code u1457(Bad Cat) and car won't start. I'm thinking that my alternator is going bad.
 

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Definitely one for the shop to sort out, especially if you have remaining warranty. Mercedes roadside service can get it to the shop for you.
 

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Sensors and electronics are voltage sensitive. Test your battery. A low battery cam cause all kinds of errors.
 
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