2004 Liberty EVIC issue

Before I go tearing into the myraid of FSM's for my 2004 Renegade, maybe I can get the answer I need here first. While Driving, my evic will switch between metric and US, there does not seem to be any outside forces that cause this, as it is random, nothing else changes however, the mpg/l/100km stay the same only in the setting that changed, psi for tires for US or kpa for Metric. Has this happened to anyone else, or does anybody have any clues as to why its doing it. I did perform the EVIC test procedure, nothing there. Any help or suggestions would be appreciated.

Thanks

KJ - my initials (karma or what)

I have an EVIC in my 04 Liberty and it does the same thing, inexplicably it reverts to US from metric. It's more of a nuisance than a problem. None of my other programming seems affected.

Di your EVIC come with your Renegade or did you install it yourself?

Hi Liberty, yes it came with the Vehicle. I spoke with Chrysler today about it and they seem perplexed about it. Of course they wanted me to take it in to them.

$ cha-ching

My 2004 does the same thing too! I posted here years ago, but never found a fix: http://www.jeepkj.com/forum/showthread.php?t=31503

That sounds like a programming glitch, I'd take it in to see if the BCM has the latest EEPROM programming and if not have the stealership download it.

Warren.fischbeck said:

That sounds like a programming glitch, I'd take it in to see if the BCM has the latest EEPROM programming and if not have the stealership download it.

Click to expand...

That sounds expensive. You don't suppose the BCM has to be programmed to know there's an EVIC present do you?

There doesn't seem to be any programming needed, I would think there is logic built into the EEPROM to divert the LCD output from the instrument consel to the EVIC. I could be wrong but from what I've seen posted that isn't the case.

The programming of the BCM should be just time on the part of the shop (hourly rate.) The EEPROM is a simple memory device that has at most 512MB of data. So if the shop doesn't have an archaic form of Internet connection and doesn't have the image on a CD then you're looking at download time of 30/45 minutes and then the actual EEPROM overlay of about 15 minutes... So an hour of work, if that. Just make sure you have the premium BCM...
From the FSM:
There are two different versions of the BCM: base
and premium. The base BCM is a subset of the components
in the premium version.The base version
8E - 2 ELECTRONIC CONTROL MODULES KJ
ELECTRONIC CONTROL MODULES (Continued)
BCM does not support the following features: Compass
Mini-Trip Computer (CMTC), fog lamps (front
and/or rear), Remote Keyless Entry (RKE), remote
radio switches, or Vehicle Theft Security System
(VTSS). Both versions of the BCM utilize integrated
circuitry and information carried on the Programmable
Communications Interface (PCI) data bus network
along with many hard wired inputs to monitor
many sensor and switch inputs throughout the vehicle.
In response to those inputs, the internal circuitry
and programming of the BCM allow it to control and
integrate many electronic functions and features of
the vehicle through both hard wired outputs and the
transmission of electronic message outputs to other
electronic modules in the vehicle over the PCI data
bus. Any time the BCM is replaced or reflashed for
any reason, there may be subsystems that may need
to be reprogrammed as well, such as Cabin Equalization.
Follow the DRBIIIt menu screen for details.
The electronic functions and features that the BCM
supports or controls include the following:
² A/C Select Switch Status - The BCM monitors
an input from, and transmits the status of the A/C
switch on the heater-A/C control.
² Ambient Temperature Data - The premium
BCM monitors and transmits the ambient temperature
sensor input data.
² Audio System Cabin Equalization - Each
time the BCM receives an electronic cabin equalization
request message from the radio over the PCI
data buss, it provides an electronic response to the
radio containing the appropriate equalization curve
information. Because there are numerous optional
radios which are common to many platforms and
available with various speaker architectures, each
radio contains a Digital Signal Processing (DPS)
microprocessor chip. This DPS chip uses the equalization
curve information to optimize the radio’s
sound output for the unique cabin and speaker architecture
found within the particular vehicle to which
the radio has been installed.

My suggestion is to buy one off ebay and see if it helps. If so, easy fix. if not, sell it back on ebay.

I spoke with Chrysler today again, for two reasons, one for my build sheet, and surprise surprise, they would not give me one, for get this 'Privacy reasons' and two to find out how much to download the BCM, 89 dollars which is 1 hour and HSt on top of that for nearly 100 dollars. Of course they would not say it would work. Although the FSM (main) refers to the EVIC, it of course refers you to the 'appropriate body FSM' to diagnose it, I have not looked at this yet, my scan tool will flash modules once I buy the one time use from tech authourity. One positive note that came from the dealership was, even though they would not give me a build sheet, they did tell me that my Jeep is a Renegade. I have tried to aquire a build sheet from the US site but it will not take Postal Codes only ZIP. Stay tuned

I went to the dealership for a build sheet the other day.

Service manager told me that it's not possible to print it out. That the computer can only display the info (No print button?). He did say that he will tell me anything that I wanted to know about my KJ.

Told him it is possible and it's been done in the past.
Spoke to the dealership manager (complained, really) and he spoke to the service manager.

Woh & behold !! a 2 page build sheet magically appeared out of the printer.
It was chopped (1 and 1/2 pages). Service manager said that certain info cannot be disclosed and would cost him his dealership licence if he did.

What irritates me is why not just explain the situation and not lie to me?

I don't think anything underhanded was meant by the dealership's actions. It sounds like they simply weren't sure what information they could have over to you so it was simpler to refuse your request then to research the matter and give you a qualified answer.

There should be no problem giving you the build sheet, there's always a "print" option in a software program even the DOS based ones. And the "build sheet" typically come with new vehicles stuck to a window so I don't know what couldn't be disclosed.

I had a similar problem with a used 04 Liberty I bought from a Chrysler dealership. I wanted a hard copy of the warranty coverage but they claimed they couldn't and used double speak to explain why

I've always found that customer service widely varies from dealership to dealership. If you're not happy with your dealership then visit another one. I have a buddy of mine with who drives an hour out of his way to have his new JK warranty serviced just because the dealership garage where he bought his JK from are terrible.

I wonder if there is one stuck under the rear seat cushion, just like the good ole days,

UPDATE: EVIC problem solved (so far)

As I orginally posted my EVIC would switch between US and Metric at will, sometimes 3 or 4 times a trip. After following the Diagnostics in the Liberty Body FSM, I was able to determine that the culprit was the main Battery. I checked and it was the original Battery. So off to Welfare Mart to buy an Optima Battery, the only place that sells them around here. (Georgian Bay). 250 dollars and a 15 dollar insult environnazi fee plus tax, Optima is good but not that good.. So I replaced with a 770CCA AC Delco sealed unit, for 100 dollars from the local shop, no bullcrap envirofee and a 5 year warranty. Put it in and so far after two weeks, no change to the EVIC. I am not saying it will work in all situations but for me it sure did.

Doublecardan said:

UPDATE: EVIC problem solved (so far)

As I orginally posted my EVIC would switch between US and Metric at will, sometimes 3 or 4 times a trip. After following the Diagnostics in the Liberty Body FSM, I was able to determine that the culprit was the main Battery. I checked and it was the original Battery. So off to Welfare Mart to buy an Optima Battery, the only place that sells them around here. (Georgian Bay). 250 dollars and a 15 dollar insult environnazi fee plus tax, Optima is good but not that good.. So I replaced with a 770CCA AC Delco sealed unit, for 100 dollars from the local shop, no bullcrap envirofee and a 5 year warranty. Put it in and so far after two weeks, no change to the EVIC. I am not saying it will work in all situations but for me it sure did.

Click to expand...

The next time anything is wrong with my KJ I'm just going to change the battery and call it a day.

A poor battery seems to cause a lot of strange symptoms with the Liberty.

Myself I'm not a fan of the Optima's. I prefer a more affordable Energizer 1000 CCA battery from WallyMart (AKA: "Welfare Mart")
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There is something to be said for a oem battery that lasts six years...if only Chrysler Transmissions and A/C units lasted that long...lol