When I start my jeep the car dings and the odemeter has 6ascap in place of miles

Ignition is a possibility. Another place to look is the neutral start switch mounted on the transmission.

I would say the switch is what you talking about
replacing,not the key cylinder

Never a simple solution to finding any problem, unless
the person working on the car gets lucky or has a sense
for certain problems on a some vehicles

check the switch

When the instrument cluster displays "no FLSH" it means there is no operating software in the instrument cluster...This is a Jeep term for No Flash. Your instrument cluster may be able to be reprogrammed with software, but that can only be done by a Jeep dealer. Your only other option would be to replace the instrument cluster...I hope this helps.

It is normal for the oil pressure fluctuate. this is caused by the oil pump not turning as fsst and pushing less oil. When the pressure starts to dip really low it is cause by the bearing wearing out and not holding the pressure. bearings normally wear out for two reasons, one is that it really high miles on the engine, the other is running it to low no engine oil. If you don't have really high miles , then I would look at the oil sending unit first. they can get clooged up and give bad readings.

not sure here as this vehicle i havent worked on yet ,the older ones yes but i would say that the computer has packed up or its on its way out ,expensive job if it is i would advise trading it in and let the dealer sort the expensive problem out .Just dont tell them whats wrong with it though

idle air control valve ,or purge valve..

You are probably unaware that your jeep has an aftermarket keyless entry system....Try this....roll down the drivers window....push the power door lock......get out/close the door...and attempt to open the door as u normally would.......it should be locked...... use your key to unlock the door....get in.....insert the key into the ignition and turn it to on...((((DON"T TRY 2 START IT UN TILL THE WARNING BELL STOPS DINGING & ALL THE DASH WARNING LIGHTS ARE OUT)))...........usually 5 dinging sounds.......at any rate just wait untill the sounds stops and fire up your jeep.....i hope this works for ya.....good luck

I had the same problem with my 2006 Jeep Liberty Renegade. I shared with the Jeep service tech what I found on the internet regarding this problem. I was having the gas cap sensor to display and soon after other sensors were lighting and dinging and some times dinging without any indicator and vice versa. the service tech said he was not aware of any such complaints and recommended a diagnostic which found no trouble codes and recommended to change to the gas cap. I did so and no sooner than paying almost $100 for the service and returning home the same thing started happening again. I returned my vehicle and they called the Chrysler/Jeep service tech who obviously was aware of these complaints [Service Bulletin #14-001-06] and recommended the following: A complete system reboot. Disconnect the battery cables and short together for 15 seconds. If message returns then the problem may be with cluster. I have not had any dinging or gas-cap sensor display since this was done.

it may be that the pcm also called the computer located under the hood is unplugged i left mine unplugged once and the dash said no buss