My 2004 Vet went nuts today. It's been building up for a few weeks and I passed it off on our incredibly wet and damp spring. I must have been kidding myself..

On the dash face I see "check gauges" and "security" plus the squiggle icon for the active handling.

Various messages on the DIC including:

1. Service traction sys:
2. Service vehicle soon
3. Reduced engine power
4. Service tire monitor system
5. Service active handling.
6. Check tire pressure

Also about 30 codes total, although there are only 13 unique ones, mostly in the U1000 thru U1300 range. I can list them all if necessary but I'm really looking for someplace to start figuring this mess out.

Buy the way, the car runs great none of the above seems to affect it although the chime is driving me crazy. Thanks, Bob C

 

Possibly to encourage more replies I am including all the codes recorded on the DIC. Some of these codes appeared in more than one module. All codes are "U" codes except these two: B0361 & B2605

All the "U" codes are here: 1626,1000,1096,1016,1064,1088, 1160, 1255, 1300, 1040, 1176

When reset the codes remain "off" for approximately ten miles or ten minutes. Help! Bob C

 

You are most likely having a SERIAL DATA BUSS issue. It can be caused by a number of things. Two of the most common are a WET or DAMP BCM and the other is a connection problem in one or all of the following:

LDCM
RDCM
Seat Control Module. (SCM)

Remove the passengers toe board and find the fuse block and BCM. Feel up under the passenger's side carpet and see if the jute padding is wet or damp. Also move the seat forward and see if the padding under the seat area is damp. If the padding /carpet is damp/wet, that could be the issue.

IF NOT:


To the LEFT of the BCM are two thin connectors. They are called STAR-1 and STAR-2 The one with FOUR wires connects the LDCM, RDCM and SCM to the rest of the serial data buss. Pop the top shorting bar of the top of the four wire connector and see if the craziness goes away.

Report back the findings.

Bill

 

Bill, there is some moisture in that area but not a whole lot. Today I "pushed" all the fuses home and checked the other components to be sure they were seated firmly and everything worked well for about 15 minutes and then back to messages and codes ! Haven't tried the little thin connectors yet, try for that tomorrow.

Today was the first time this year that my steering column extended ! But it was a function of the memory circuit and not the column switch ?

All seat functions work plus the memory stuff. Occasionally the gauges will stop working for a while and come back on their own, likewise the radio will cut out and come back too. Very mysterious. Bob C

 

BCM Moisture is not good

The ones on this list below sound like ignition switch issues:

All seat functions work plus the memory stuff. Occasionally the gauges will stop working for a while and come back on their own, likewise the radio will cut out and come back too. Very mysterious. Bob C

 

I am a newbie. How do I fix error message " service tire monitor system"
thanks to all for responses.
austin

 

Always better to start a new post when not dealing with the OP inquiry.
It's possible you are getting a message because you have a battery that is failing. You should first reset any message on the DIC. If message pops up again then follow instructions on this video:

 

Yes, i pulled the shorting bar and all the goofy lights and messages went away. After I plugged it back in everything was good for about five miles and then it all came back. can you draw any conclusions from this along with a suggestion for the next step. I'm not a "throw parts at a problem" and see what sticks. Would a dealer with a Teck2 tool be able to narrow down the offending component (s) ? Bob C

 

I'm assuming since you only took off one shorting bar and drove the car it was the Star Connector with the 4 wires...there is a 0-7 volt square ware that you would see with a labscope but you can use a voltmeter...you most likely have 12 volts on one of those wires...if you do let us know what color wire and we can let you know what module it is...if you find 12 volts you will go to that module and see if the connector has corrosion and or bad pin fitment...it will usually be a ground wire if you find 12 volts...without a good ground the module voltage has to find a ground and if it can't find one it "jumps" on that data line...that will give you all that crazy stuff !!...a good signal wire will show less than 1 volt and it will vary slightly...you will NOT see 7 volts with a voltmeter...a Forum member had serial data issues but when he disconnected and reconnected the harness his problem went away...most likely some corrosion on the connector and it fixed itself...if the connector terminals are OK it may be a bad module !!
NORMALLY if you have the data line with power or ground on it the car will not start as in this video !!...also I see you have a U1300...that should be ground on the data line...mmmm ??...also that “comb” even though it may look good...take a wire brush or sandpaper and clean it good...that was an issue I saw a few months ago...we couldn’t get some modules to communicate so the member wire brushed it and we got all the modules to communicate...that was a head scratcher !!

 

Actually I disconnected BOTH of those thin connectors , (separately). When the one with multiple wires was disconnected the car would fire but not run ! The "combs" looked OK but certainly won't hurt to give them another look.Not sure about chasing down volts etc as I am not much of an electrical guy although it would be nice to know which module is causing all this aggravation. Thanks Bob C

 

With the “comb” removed off the Star Connector with the 9 wires the car will NOT start !!...you have to get a jumper wire and jump the BCM to the PCM...if not not an “electrical guy” maybe it’s best bringing it to your local mechanic if you don’t feel confident using a volt meter !!...you can try removing each of the door modules or connectors inside the “accordion” or “bellows” conduit one at a time and then the seat control module...it is most likely one of those 3 !!