When I turn the key to the on position the abs pump runs for 30 seconds sometimes longer. It then shuts off and will come back on about every 2 minutes for a duration of 3-4 seconds (This while at idle in the driveway). While underway, the pump seems to come on every other time brake is depressed for 3-4 seconds (and every two minutes when brakes ar ent being used). Does anyone know if this is air (maybe a leak)in the system? Bad ABS pump? Bad Accumulator? This is my first rover and I've only had it 2 days now, thanks for any help.