I am fairly confident this falls in the general tech help section so here it is. I have a 2000xj8 base and a 2000 xj8-long virtually the same cars.The long is rarely used...and more of a weekend rider and taken to car meets...mostly local.....I recently had to take the car to inspection (note currently in the state of new jersey the inspections consists primarily of of an emissions check/test).

a few weeks ago i had the car serviced......a change of oil ....and topping off of fluids....everything checked out fine ...no engine light on....running great. I should also mention that around the same time I was having problems with the driver side window and sun roof.....this turned out to be a global/key opening issue which was remedied with some help I RECEIVED FROM FORUM MEMBERS ...by doing a re-set....disconnecting the negative pole on the battery and than re-connecting.....so the windows were working fine by the time i went to inspection.

so i go to inspection yesterday....the car did not fail but i was asked if the car was recently serviced i said yes....the inspector claimed that he was unable to get a read on two of the six systems checked and told me to drive the car more/put more miles on it...especially highway- sustained at 55 pmh.

try it.....and you have 30 days to have re-inspected. well at this point i was concerned and went back to my mechanic...who told me this is an issue on jags.(other cars also)...just take the car for a spin on the highway....it will re-set once you hit the designated miles required for the systems to activate and be checked for emissions.He could not tell me the exact amount of miles required. Some cars take only 20 miles of the elevated driving others can take 100 miles or more.....

haven't done this yet but made sense to me as i really rarely open the car up especially for sustained amount of time.(car was bought in November of 2012 and i don't think I have put more than 350 miles on it ....so once again....has this happened to you?

and when i unhooked the battery to address the window problem.....did i also re-set the systems necessary to activate the emissions controls required in order for the inspectors to conduct a" readable" emissions test? your input and or experience on this issue greatly appreciated.....jagjunky

 

jagjunky, yes, some of the systems require a finite amount of driving to get them to completely clear. I would say to put a tank of fuel into the car, enjoy a nice drive out to the beach, watch a sun set and then head on back. Get the car out, set the cruise and just enjoy a quiet time with your kitty.

As for resetting the computer, yes, when you disconnected the battery, you erased any built up time for getting the various parts checked. So, that was not helping your case.

 

As Thermo stated, if you disconnect the battery, you erase ALL the readiness tests.
You must perform the drive cycle all over again so the ECM can test all the systems it monitors.

Each test has parameters that must be in place such as 'fuel tank between 1/4 and 3/4, drive at some speed for some period of time, idle for a period of time etc.

Some require 2 trips or a startup below a certain engine temp.

bob gauff

 

thanks for confirming...what i suspected.....i actually compounded the problem....because....i had replaced the battery a few weeks before i had the window problem where i disconnected the battery again...to get the window to open and work properly.

 

Although just driving will complete the OnBoard Tests, it can take some time. There is NOT a designated mileage for this.

A more systematic approach can be used to complete the OnBoard Tests faster by doing 'drive cycles':

Drive Cycle.pdf

Note that it can take up to 5 Drive Cycles to complete catalyst monitoring.

Graham

 

Grahm/others.....its a bit amazing( i think) that there seems to be no definitive info on exact mileage one needs to put on the car, at what specific speeds and for what duration s and cycles .........in order to get the on-board emissions related systems activated......for important stuff like inspection requirements.....nothing on this in owners manual ....but i wonder if anything is more specifically stated in /for the car's technical-shop manual....

Most mechanics I have spoken to on this issue....can't tell you...other than just keep driving the car....The state of New Jersey/inspection is aware.....and essentially they give you 60 days( total) to satisfy" readiness status"....so they can pick up readings when they inspect for pollution/emission-catalytic converter, etc.

 

This is nothing unique to Jaguars. I'd almost say that 'all' cars have similar requirements.

Since it's not standard procedure to disconnect the battery during normal operation of the vehicle or scheduled maintenance, there's no real reason to make mention this in the owners manual.

 

jagjunky, let me look through my TSBs. It seems to me that there is a mention of what is needed to clear the ECU and get it to the P1111 status. I might be mixing it with other things, but I am pretty sure. I know there is requirements like 10,000+ RPMs on the motor, so many accelerations from 5-30+ mph, so many accelerations from ...... to make the ECU happy. Let me see what I can find.

 

Well, I looked, didn't find anything that said what it takes to make the systems do all their checks. I will keep an eye out and see what I can find.

 

All you wanted to know about the monitoring systems.
Dry reading but informative.

bob gauff

 

thanks again to all......the links and cycle info provided were given over to my mechanic....who although not exclusively a jag mechanic....is familiar with the issue...and for the most part in close agreement with what I have obtained from all of you thus far. Great stuff.

While I understand....battery removal and replacement( and its consequences) are not necessarily part of owners manual information....i was hoping there was some system over ride that would allow a more easy or direct way to set emissions parameters.

Apparently not...I am going to have to work off the" five cycle" procedure which should get me to where i need to be on this issue and so that I can obtain a proper valid inspection sticker.....