Parking Assistant Hi, my Parking Assistant is not working, when I try to turn it on it gives me single beep and the longer beep with different tone then it's not working at all. I've checked the sensors with a meter and they seems to be working fine. I've scanned Parking Assistant control module with OBD-II cable and it shows error code stored: 0162731 Anyone able to help with this one ?

First you can go around the car and check all the silly stuff. Check all the windows are wound fully up, open and close all the doors and the tailgate then remove and refit your fuel filler cap. These can trigger warning tones. Check there isn't anything heavy on one of the seats as this can trigger the seat belt warning tone. Yes, I did it with a bag of potatoes and it drove me mad trying to figure it out. Check you haven't turned a car feature on by accident like the Parking sensors or the 'Passing to Close' alarm. Some reverse sensors 'Beep' when you put it in gear so have you left it in gear when you parked the car?

the chime can be from a few systems that may have a fault going on --seat belt female connection -seat weight switch-turn indicator left on - low fuel-door open -air bag -lights left on -etc

NOTE: The generic electronic module/central timer module (GEM/CTM) is connected to the ISO link and is diagnosed through the data link connector (DLC) with a scan tool.
There are five warning chimes and lamps the GEM/CTM controls: headlamps operating without the ignition on (chime only), door ajar (chime and lamp), key-in-ignition (chime only), driver seat belt warning (chime and lamp), and message center.


Audible Warnings Warning Condition Lamp Duration Audible Duration Audible Output Safety Belt 60 Seconds 6 Seconds Chime, 60/Min. 740 Hz Key In Ignition - Continuous Chime, 120/Min. 740 Hz Headlamps On - Continuous Chime, 240/Min. 740 Hz Door Ajar Continuous 1 Second Single Tone, 1000 Hz Message Center (Tone Request) - 1 Second Single Tone, 1000 Hz
When the is turned to RUN or START from OFF or ACC, the chime will sound for six seconds or until the safety belt is buckled.
The will turn on for 60 seconds or until the driver safety belt is fastened. Both the chime and the lamp turn on at the same time.
If the safety belt is buckled before the ignition switch is turned to RUN or START, from OFF or ACC, neither the chime nor lamp will be activated.
Anytime the is changed to RUN from START while the safety belt warning indicator is activated, the safety belt warning indicator will remain activated until either the timing sequence has been executed or the safety belt is buckled.
When at least one door is ajar and the key is in the RUN position, the door ajar cluster lamp is activated and remains on until all doors are closed. A warning tone will sound once any time the key is in the ignition switch and any door is open.
The key-in-ignition warning will sound when the driver side is opened with the key in the and the in OFF or ACC. It will continue to sound until the key is removed, the is closed, or the is in RUN or START.
The headlamp-on reminder chime will be activated if the headlamps or parking lamps are on, the key is not in the ignition switch, and the driver door is opened.
A single tone will be provided each time a ground signal is received from the message center. A one-second tone will sound for warning indications from the message center. A 100 milli-second tone will sound for each message center button depressed.

did you RTM read the operators guide yet,
it tells you why all beeps beep and what lamps flash, (warning) and why. did you?
you turn on, the head lights, (what about 1st click , parking lights"?)
and does the dash cluster, show warnings of any kind?

if a door is ajar the system will think, you are exiting veh. with lights on and tell you, buy beeping ,etc.
but on my jeep it says on the dash DOOR, or on EVICs, (not yours)
the newer car even tells what door IS AJAR.
mine on shows , "DOOR"
the operator guide will say, check all doors for ajar, and get warning clear before driving....etc.

if you lost the guide here it is for free

http://justgivemethedamnmanual.com/jeep/jeep-wrangler-owners-manuals/

click the 05 link
ignore beeps, there are just too many .. i look at the cluster and learn to read it..
my newer jeep 08 can produce 1000s of errors,,,,, possible.
in fact the intent it to beep to tell the driver to look at the cluster
for in depth, causes.
see chapter starting on page 136'

once sound it makes is Check gauges chime. so check them.
and headlamps left on
and door ajar.

page 63
NOTE: If the driver's door is left open, and the headlights
or parking lights are left on, the "High Beam
Indicator Light" will flash and a chime will sound.
Lights-On Reminder
If the headlights or parking lights are on after the ignition
is turned off, a chime will sound when the driver's door

its a crude system, and evolved to complex in 2007.
"DOOR" or RF-door , on mine.
or

NOTE: A tone will chime if the turn signals are left on
for more than 1 mile (2 km).

search manual for
"chime will sound"

you can check the sensors by putting in reverse with ign on no engine running. and listen to each sensor in turn put your ear close to sensor it should click very faintly any that don't are poss faulty does the sounder emit a error tone one long beep if not check for water in the module located in boot against rear panel.if that's ok the sounder may have gone down

One way to turn off the automatic headlights when the ignition is to apply the parking brake. That dinging sound you hear when you shift into drive is also common with the parking brake applied.

Release the parking brake.

It could be a short or even a bad wire but also it could be lose

Sensor has failed/Malfunctioned or needs to be reset take to auto electrician for further diagnosis. I hope this helps.

it sounds like the control modual for the sensors could have a issue, have you had a software upgrade from the dealer yet?

Could be a touching wire somewhere ,,are they clean? and have you changed any bulbs lately etc?
Regards
Dan