Cllr David Coppinger, cabinet member for adult services, made the pledge during a full meeting last week.
This came after he was asked by a resident about the decision by the Independent Reconfiguration Panel (IRP) to reject the council’s call for a review into the NHS’s decision to move the hospital’s minor injuries unit to Bracknell.
At the meeting held in Windsor, Cllr Coppinger said: “We are not satisfied and will not be until the right services are at the right hospital. There are concerns even from the IRP [report] that things are not as they should be.”
Cllr Coppinger added he would be writing a letter to the IRP and Health Secretary Jeremy Hunt reflecting the concerns of residents and the council.
The decision to remove the minor injuries unit at Heatherwood, plus close the rehabilitation ward and the birth unit, was made by the now defunct Berkshire Primary Care Trust in March.
The minor injuries unit (pictured) is set to move to a newly created urgent care centre within the Royal Berkshire Bracknell HealthSpace in Brants Bridge, Harmans Water, in April.
The minor injuries unit at Heatherwood, in Ascot, will be open every day throughout Christmas.
On Christmas Day it will be open 8am-2pm and on Boxing Day from 10am-6pm. On other days it is open the normal hours of 8am-10pm.