* Incorrect oil type or amount: The most straightforward explanation is that the wrong type of oil was used (incorrect viscosity or specification), or the wrong amount was added. This could lead to insufficient lubrication, triggering the low oil pressure light. Low oil level might also indirectly cause overheating, triggering the coolant light (though less likely to be the *primary* cause).
* Sensor issues: The oil pressure sensor or coolant temperature sensor could have been damaged during the oil change (though unlikely unless something was bumped or improperly connected). A faulty sensor would give false readings, triggering the warning lights.
* Oil filter issue: The oil filter might have been incorrectly installed, resulting in insufficient oil flow and low pressure. A clogged filter is also possible, though less likely immediately after a change unless a defective filter was used.
* Damage during service: While less probable, it's possible that something was accidentally damaged during the oil change procedure, such as a wire harness, leading to false sensor readings or actual system failure.
* Pre-existing problem exacerbated by the oil change: The oil change might have revealed a pre-existing issue. For example, a failing oil pump might have been masked by the previous oil, but the new oil highlighted the problem. Similarly, a cracked engine block or head gasket could leak oil, causing low pressure and overheating.
* Coolant leak (unrelated to oil change): The coolant light could be due to a completely separate issue, such as a leak in the cooling system. The simultaneous occurrence with the oil light is coincidental in this scenario.
What to do:
1. Return to the Ford dealer immediately. This is crucial. Driving the vehicle with low oil pressure can cause catastrophic engine damage. Explain the situation clearly and calmly. They should diagnose the problem as part of their warranty of service.
2. Do NOT drive the vehicle. Severe engine damage could result from continuing to operate it with a low oil pressure light illuminated.
The dealer is responsible for rectifying the problem, particularly since it occurred immediately after their service. Keep records of the oil change and any subsequent repairs.
