As above.
Dealer cannot help.
Not found in manual
When driving along normally and stop or have an enforced stoppage. Even with handbrake on or neutral selected an icon come up on the dash and it keeps bleeping.
HELP its driving me bonkers as it was always considered a bad habit to sit with the foot on the brake in trffic
According to
Dacia Sandero / Sandero Stepway Dashboard Warning lights Meaning
This warning light means this...
assuming the brake fluid level/float switch is OK, it looks as if you've got hand brake issue. My light (manual g/box) will come on even at very low speeds, far less than 20mph, if I put the handbrake on when the car is still moving and is accompanied by a fast beeping noise (different to the seatbelt warning beeper). If I put on the handbrake I can see below the handbrake, between the 2 adjusters, the silver top of the handbrake microswitch. I can, with the aid of a "poker", push the switch down and get the warning light to go out.
Suggest you try to hold the switch down and see if your issue is resolved.
Yes, it's a bad habit to sit with the foot on the footbrake with the car in gear (auto or manual) it puts a load on the gear train components, wastes fuel and, in the event someone shunts you in the rear, you're liable to let your foot off the brake pedal and move forward.