Traction light — car with squiggly lines behind it.

My daughter has a 2015 Volkswagen
Passat. A few days ago she took it in
for an oil change. When she left the
shop, or engine light came on. She
turned around and took it back to the
shop they reset it. I’m thinking all they
did was turn the light off they did not
fix whatever they did to cause it to
come on. So that’s my first concern.
Then today she noticed that her
traction symbol is lit up. The roads
are dry. We don’t have snow. So
there’s no reason for that to be on
right? What could be the problem?