4H Beeping?

2010 TRD Off Road, was in 4H no problem climbing small hill at 20mph, the beeping that goes off when losing traction went off, but there was nothing flashing, 4WD indicator was just lit as should be when in 4WD. Is that just a loss of traction indicator? Did a search and could only find references to the beeping was regarding 4Lo.

Had it serviced few days ago (both differentials) and was in 4H since then a bit due to weather, but didn't do the beeping till now.

 

Most likely your VSC kicking in. Basically the engine cuts power to alleviate spinning wheels. In many cases off road you want the wheels to spin so turn it off by hitting the button on the left side of the steering wheel.

 

Thanks!! What I figured and hoped ... just wanted to make sure something was not messed up after having her serviced.