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-   -   SERVICE 4WD SYSTEM Sensors (http://www.jeepgarage.org/f181/service-4wd-system-sensors-68536.html)

brubakes 11-28-2013 12:00 PM

SERVICE 4WD SYSTEM Sensors
 
What are all the sensors that can trigger the "SERVICE 4WD SYSTEM" error message? I do NOT have the Quadra-Trac II system if there are additional sensors specific to it.

Scottina06 11-28-2013 05:32 PM

Re: SERVICE 4WD SYSTEM Sensors
 
they run along the suspension and plug into the hubs

brubakes 11-28-2013 05:55 PM

Re: SERVICE 4WD SYSTEM Sensors
 
Quote:

Originally Posted by Scottina06 (Post 937559)
they run along the suspension and plug into the hubs

One per wheel? ABS sensors in the same place?

Scottina06 11-28-2013 06:01 PM

Re: SERVICE 4WD SYSTEM Sensors
 
yes...same thing. The abs sensors also serve as the awd system sensors sort of

brubakes 11-28-2013 06:53 PM

Re: SERVICE 4WD SYSTEM Sensors
 
Quote:

Originally Posted by Scottina06 (Post 937574)
yes...same thing. The abs sensors also serve as the awd system sensors sort of

Maybe that's why I couldn't find part numbers for the 4WD sensors. Guess I'll start looking at/for the ABS sensors.

Scottina06 11-28-2013 07:01 PM

Re: SERVICE 4WD SYSTEM Sensors
 
they are like $32 each or so. Run along the knuckle and plug into hub. Very easy replacement.

brubakes 11-28-2013 07:08 PM

Re: SERVICE 4WD SYSTEM Sensors
 
1 Attachment(s)
Is this what I'm looking for? The right rear looks pretty tight compared to the other side.

Scottina06 11-28-2013 07:12 PM

Re: SERVICE 4WD SYSTEM Sensors
 
which one do you need to replace?

brubakes 11-28-2013 09:57 PM

Re: SERVICE 4WD SYSTEM Sensors
 
Quote:

Originally Posted by Scottina06 (Post 937597)
which one do you need to replace?

The right rear looks like it's been pulled tight so maybe that one. Truth is I don't know, but if the sensor is only $13 for each rear or even $30 for each front just throwing parts would be cheaper then taking it to the dealer.

Scottina06 11-28-2013 10:47 PM

Or find someone who has a code reader. Local garage, body shop etc.

brubakes 11-29-2013 07:40 AM

Quote:

Originally Posted by Scottina06 (Post 937666)
Or find someone who has a code reader. Local garage, body shop etc.

please correct me if I'm wrong, but don't you need the special dealer only star scan tool for the four wheel drive and ABS system codes?

brentwoodkris 12-02-2013 12:12 PM

Re: SERVICE 4WD SYSTEM Sensors
 
Quote:

Originally Posted by brubakes (Post 937775)
please correct me if I'm wrong, but don't you need the special dealer only star scan tool for the four wheel drive and ABS system codes?

If you're getting the Service 4WD message, you can probably do the key flick trick and get the DTC to display the code. That should at least let you identify L or R side. Without the StarScan or a tuner there is no way to differentiate between F/R. However, someone posted that you could measure the resistance of the sensors if you pulled them to tell whether they're still good or not.


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