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The roads were flooded this morning as I drove my 2015 S212 E220D BLUETEC. After what seemed like an eternity, the dashboard began flashing amber alerts that the following were no longer accessible:
ABS, EPS,

Plus! Accident Avoidance Aid
Also, it seems like I've lost: brake hold.
Powerful Parking Aid

The vehicle can still be driven, but clearly, it's not ideal to have these capabilities lost.

Can I do anything to reset it before bringing it to the repair shop?

Please respond at your earliest convenience; by the way, I apologise for the title's misspelling of "assist," but I am unable to change it.

Given those issues, it's probably a wheel speed sensor.

I concur with the motor sensor. My 2013 C220 cdi had the same issues. The code reader identified the component as the Front Left ABS Sensor. I gambled and ordered two online for £16.99 because the original Mercedes part was £60. The only tricky element of the installation was the far end of the wire, which required bending back the inner tire arch to clip in—but if you want to learn how to do that, there are plenty of tutorials on YouTube. All the lights and warnings went off as soon as the vehicle identified it. Great work!

It was the ABS sensor, as everyone had suspected.

Pleased to meet you. Have you had this problem in addition to the others? I'm new to the site and read your post; it describes my Cla perfectly. However, my power steering also stops working. This issue might occur intermittently or completely while driving. Tomorrow I will be consulting with an independent professional in MB. I am just curious about the estimated total cost. Much obliged.

It was the magnetic wheel bearing that was causing the problems on our B200. The sensor detects impulses when the wheel spins, and the seal is also magnetic.
You may purchase the bearings and have them pushed into place, but I ended up replacing the whole knuckle.

It turned out to be the rear ABS sensor on my vehicle; around ten months later, the other side had the same problem. After the initial repair using an aftermarket sensor failed, the cost to have it replaced by an independent MB expert using MB parts was roughly £450. They informed me the drive shaft had to be removed in order to fix it, which is why it's so pricey.
Kindly provide an update on your progress.

It seems to me that your vehicle has electric power steering.