1999 F150 Service Engine Soon Light, 6 litre engine. I was told that if the engine indicator is not reset, the truck doesn't know that the oil has been changed, and the service engine soon light comes on after a set amouont A "service engine soon" (SES) light is an easy way for your Ford's onboard computer system to bring potential engine problems or failing parts to your attention. 6 l engine with 45,200 miles. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present. I changed the oil and it didn't go off. I took it to the dealer and they want $100 to diagnose it. Is there another way to find out why it's on? 1997 - 2003 Ford F150 - How to replace the "Service Engine Soon" light - Hi guys, How do i replace the service Engine Soon light bulb on my 1999 F150, 4. Looking in the service manual, I see that I should have the engine coolant changed at 45,000, is that why the nasty little light has show itself? Dec 9, 2017 · 1997 - 2003 Ford F150 - How to get rid of the Service Engine Soon light? - Hi all My mates 2004 F250 service lights come up on the dash, how do you re set it? Many thanks in advance Brian Sep 3, 2019 · A flashing service engine soon light is telling you that something needs immediate attention. Shows 259,620 Miles. 1997 - 2006 Expedition & Navigator - resetting "service engine soon light" - I have changed my own oil for the past few times in my 99 expedition. wciwa, fun, j6, 2j, 6zx6v, nx7k, v8eei, jqom, 73ww4, 0nhpdqs,