2001 Z28 beeps twice after locking
04-07-2019, 12:43 AM
#1
On The Tree
Thread Starter
2001 Z28 beeps twice after locking So my trunk has a slight leak right above the passenger side rear speaker right above where the shock sensor is for the alarm. So recently I washed my car and I believe that water may have reached the shock sensor. I checked it today, but I did not see any traces of water in that area.
Ever since I washed my car, the horn will beep twice shortly after I lock the car using the auto lock button on the driver door. And it's like an ACTUAL honk, not a chirp as you would get with a remote key. However if I manually lock both doors using the lock sliders, there is no double honk afterwards. I was wondering if there is a way to bypass this double honking issue through the shock alarm sensor? I don't have a key fob for my 2001 Z28 (previous owner lost it and I never bought another one). I live in a very populated area and the last thing I need is my car alarm going bonkers or disturbing the neighbors every time I lock my car late at night. Will unplugging that alarm shock sensor by the spare tire fix the issue?
Ever since I washed my car, the horn will beep twice shortly after I lock the car using the auto lock button on the driver door. And it's like an ACTUAL honk, not a chirp as you would get with a remote key. However if I manually lock both doors using the lock sliders, there is no double honk afterwards. I was wondering if there is a way to bypass this double honking issue through the shock alarm sensor? I don't have a key fob for my 2001 Z28 (previous owner lost it and I never bought another one). I live in a very populated area and the last thing I need is my car alarm going bonkers or disturbing the neighbors every time I lock my car late at night. Will unplugging that alarm shock sensor by the spare tire fix the issue?
04-07-2019, 09:15 AM
#2
Weird.
This will definitely isolate the sensor and confirm if it's involved. No harm in doing this. It cleanly takes the sensor out of the loop. Please post back your results.
BTW - I've found a replacement for this sensor. I'm still working on testing the new part on the car, but the bench testing I've done has been phenominal: https://ls1tech.com/forums/stereo-el...ck-sensor.html
BTW - I've found a replacement for this sensor. I'm still working on testing the new part on the car, but the bench testing I've done has been phenominal: https://ls1tech.com/forums/stereo-el...ck-sensor.html
04-07-2019, 11:37 AM
#4
On The Tree
Thread Starter
Weird.
This will definitely isolate the sensor and confirm if it's involved. No harm in doing this. It cleanly takes the sensor out of the loop. Please post back your results.
BTW - I've found a replacement for this sensor. I'm still working on testing the new part on the car, but the bench testing I've done has been phenominal: https://ls1tech.com/forums/stereo-el...ck-sensor.html
This will definitely isolate the sensor and confirm if it's involved. No harm in doing this. It cleanly takes the sensor out of the loop. Please post back your results.
BTW - I've found a replacement for this sensor. I'm still working on testing the new part on the car, but the bench testing I've done has been phenominal: https://ls1tech.com/forums/stereo-el...ck-sensor.html
I noticed that my shock sensor does not have a little white dial on the side. That dial is for adjusting the sensitivity right?
04-08-2019, 07:39 AM
#6
If you have the optional factory alarm systems, horn honks and lights flashing upon arming is a programmable configuration. There may be nothing wrong with your system and it is just set to mode 2 in the Theft Deterrent Arming Verification. Unfortunately, you need a working remote to program that option. However, you can program the Theft Deterrent Arming Method to off without a remote.
Here is the information on programming from your owner's manual:
Here is the information on programming from your owner's manual:
PROGRAMMING THE FACTORY ALARM
ENTERING PROGRAMMING MODE
To program features, the car must be in programming mode.
1) Turn key to RUN position.
2) Turn key to OFF position.
3) Remove the RADIO fuse in the main fuse panel.
4) Turn the key to ACC
You should hear a chime to verify that the system is in the programming mode.
1 chime means you can program Exit Lighting, Delayed Illumination, Last Door Closed Locking and Lock Out.
2 chimes means your car is equipped with Content Theft-Deterrent System so you can also program Remote Keyless Entry Verification, Arming Method, Arming Verification, Driver's Door Delay and Shock Sensor Enable.
EXIT LIGHTING & ILLUMINATION
With exit lighting, your interior lamps will come on for up to 25 sec. when the key is removed.
With Delay Illumination, your interior lamps will come on and stay on for up to 25 sec. when entering the car and up to 5 sec. when leaving the car.
To change the factory setting...
1) Turn the courtesy lamps on by turning the instrument panel brightness control **** all the way up.
2) Count the number of chimes you hear. The number of chimes tells you which mode you are in.
3) Turn the courtesy lamp switch off.
4) Turn the switch on and off until you hear the number of chimes that correspond to the mode you want to be in.
MODE 1 Both Off.
MODE 2 Delayed Illumination Only.
MODE 3 Exit Lighting Only.
MODE 4 Both On.
LAST DOOR LOCKING & LOCKOUT PREVENTION
To change the setting...
1) Press the LOCK switch on the door.
2) Count the number of chimes you hear. The number of chimes tells you which mode you are in.
3) Press the LOCK switch on the door until you hear the number of chimes for the mode you want to be in.
MODE 1 Both Off (Door will lock and unlock when you press the door lock switch)
MODE 2 Lockout Prevention Only (If you leave your keys in the ign. and leave thru the driver's door, you won't be able to lock the doors with the power door lock switch.)
MODE 3 Last Door Closed Only. (If the power door lock switch is used to lock the car while any door is open, you will hear 3 chimes. The doors will not lock until all the doors are closed.)
MODE 4 Both On. (This combines Mode 2 and 3.)
REMOTE KEYLESS ENTRY VERIFICATION
To change this setting...
1) Press the UNLOCK button on the remote transmitter.
2) Count the number of chimes you hear. This tells you which mode you're in.
3) Press the UNLOCK button on the remote until you hear the number of chimes that correspond to the mode you want.
MODE 1 All Off. (The head lights will not flash and the horn will not sound)
MODE 2 Horn and Lamps/Lamps (Your horn will sound and your parking lights will flash when you press the LOCK button on the transmitter. Only the parking lamps will flash when you press UNLOCK)
MODE 3 Horn and Lamps (Your horn will sound and the parking lamps will flash every time you press LOCK or UNLOCK)
MODE 4 Lamps (The parking lamps will flash when you press LOCK or UNLOCK)
MODE 5 Lamps/Horn and Lamps (Lamps will flash on the first press on LOCK, your lamps will flash and the horn will sound on the second press on LOCK and the lamps will flash any time you press UNLOCK)
THEFT-DETERRENT VERIFICATION
To change this setting...
1) Press the LOCK button on the remote.
2) Count the number of chimes you hear.
3) Press the LOCK button on the remote until you hear the number of chimes you want.
MODE 1 All Off (No horn chirp or lamp flash)
MODE 2 Horn and Lamps (Your lamps will flash and the horn will chirp twice)
MODE 3 Horn and Lamps/Lamps (If you use the remote to arm the system, your lamps will flash and the horn will chirp twice to verify the system is armed. If it only chirps once, the hatch is open or unlatched. If you use either the power door lock switch or passive arming, only the lamps will flash for verification)
THEFT DETERRENT ARMING METHOD
To change this setting...
1) Press the UNLOCK switch on the door.
2) Count the number of chimes
3) Press the UNLOCK switch on the door until you are in the mode you want.
MODE 1 Alarm System Off (System will not arm)
MODE 2 Remote Keyless Entry Transmitter Lock (When you lock the doors using the remote, the system will arm itself)
MODE 3 Remote Keyless Entry Transmitter/Power Door Lock Switch (If you use the remote or the power door lock switch to lock the doors, the system will arm)
MODE 4 Passive Arming and Remote Keyless Entry Transmitter/Power Door Lock Switch Arming (The system will arm itself after all doors are closed plus arming per MODE 3)
DRIVER'S DOOR ALARM DELAY AND SHOCK SENSOR ENABLE
To change this setting...
1) Turn the parking lamps on and off
2) Count the chimes
3) Turn the parking lamps on and off until you hear the number of chimes you wany
MODE 1 Zero Delay and Sensor Disabled (The alarm will sound immediately if the driver's door is opened with your key and the shock sensor will be disabled)
MODE 2 8 Second Delay and Shock Sensor Disabled (The alarm will sound 8 seconds after the driver's door is opened with your key and the shock sensor will be disabled)
MODE 3 Zero Delay and Shock Sensor Enabled (The alarm will sound immediately after the driver's door is opened with your key and the shock sensor will be active)
MODE 4 8 Second Delay and Shock Sensor Enabled (The alarm will sound 8 seconds after the driver's door is opened with your key and the shock sensor will be active)
LEAVING PROGRAM MODE
When programming is done, turn the ignition to OFF and replace the RADIO fuse.
ENTERING PROGRAMMING MODE
To program features, the car must be in programming mode.
1) Turn key to RUN position.
2) Turn key to OFF position.
3) Remove the RADIO fuse in the main fuse panel.
4) Turn the key to ACC
You should hear a chime to verify that the system is in the programming mode.
1 chime means you can program Exit Lighting, Delayed Illumination, Last Door Closed Locking and Lock Out.
2 chimes means your car is equipped with Content Theft-Deterrent System so you can also program Remote Keyless Entry Verification, Arming Method, Arming Verification, Driver's Door Delay and Shock Sensor Enable.
EXIT LIGHTING & ILLUMINATION
With exit lighting, your interior lamps will come on for up to 25 sec. when the key is removed.
With Delay Illumination, your interior lamps will come on and stay on for up to 25 sec. when entering the car and up to 5 sec. when leaving the car.
To change the factory setting...
1) Turn the courtesy lamps on by turning the instrument panel brightness control **** all the way up.
2) Count the number of chimes you hear. The number of chimes tells you which mode you are in.
3) Turn the courtesy lamp switch off.
4) Turn the switch on and off until you hear the number of chimes that correspond to the mode you want to be in.
MODE 1 Both Off.
MODE 2 Delayed Illumination Only.
MODE 3 Exit Lighting Only.
MODE 4 Both On.
LAST DOOR LOCKING & LOCKOUT PREVENTION
To change the setting...
1) Press the LOCK switch on the door.
2) Count the number of chimes you hear. The number of chimes tells you which mode you are in.
3) Press the LOCK switch on the door until you hear the number of chimes for the mode you want to be in.
MODE 1 Both Off (Door will lock and unlock when you press the door lock switch)
MODE 2 Lockout Prevention Only (If you leave your keys in the ign. and leave thru the driver's door, you won't be able to lock the doors with the power door lock switch.)
MODE 3 Last Door Closed Only. (If the power door lock switch is used to lock the car while any door is open, you will hear 3 chimes. The doors will not lock until all the doors are closed.)
MODE 4 Both On. (This combines Mode 2 and 3.)
REMOTE KEYLESS ENTRY VERIFICATION
To change this setting...
1) Press the UNLOCK button on the remote transmitter.
2) Count the number of chimes you hear. This tells you which mode you're in.
3) Press the UNLOCK button on the remote until you hear the number of chimes that correspond to the mode you want.
MODE 1 All Off. (The head lights will not flash and the horn will not sound)
MODE 2 Horn and Lamps/Lamps (Your horn will sound and your parking lights will flash when you press the LOCK button on the transmitter. Only the parking lamps will flash when you press UNLOCK)
MODE 3 Horn and Lamps (Your horn will sound and the parking lamps will flash every time you press LOCK or UNLOCK)
MODE 4 Lamps (The parking lamps will flash when you press LOCK or UNLOCK)
MODE 5 Lamps/Horn and Lamps (Lamps will flash on the first press on LOCK, your lamps will flash and the horn will sound on the second press on LOCK and the lamps will flash any time you press UNLOCK)
THEFT-DETERRENT VERIFICATION
To change this setting...
1) Press the LOCK button on the remote.
2) Count the number of chimes you hear.
3) Press the LOCK button on the remote until you hear the number of chimes you want.
MODE 1 All Off (No horn chirp or lamp flash)
MODE 2 Horn and Lamps (Your lamps will flash and the horn will chirp twice)
MODE 3 Horn and Lamps/Lamps (If you use the remote to arm the system, your lamps will flash and the horn will chirp twice to verify the system is armed. If it only chirps once, the hatch is open or unlatched. If you use either the power door lock switch or passive arming, only the lamps will flash for verification)
THEFT DETERRENT ARMING METHOD
To change this setting...
1) Press the UNLOCK switch on the door.
2) Count the number of chimes
3) Press the UNLOCK switch on the door until you are in the mode you want.
MODE 1 Alarm System Off (System will not arm)
MODE 2 Remote Keyless Entry Transmitter Lock (When you lock the doors using the remote, the system will arm itself)
MODE 3 Remote Keyless Entry Transmitter/Power Door Lock Switch (If you use the remote or the power door lock switch to lock the doors, the system will arm)
MODE 4 Passive Arming and Remote Keyless Entry Transmitter/Power Door Lock Switch Arming (The system will arm itself after all doors are closed plus arming per MODE 3)
DRIVER'S DOOR ALARM DELAY AND SHOCK SENSOR ENABLE
To change this setting...
1) Turn the parking lamps on and off
2) Count the chimes
3) Turn the parking lamps on and off until you hear the number of chimes you wany
MODE 1 Zero Delay and Sensor Disabled (The alarm will sound immediately if the driver's door is opened with your key and the shock sensor will be disabled)
MODE 2 8 Second Delay and Shock Sensor Disabled (The alarm will sound 8 seconds after the driver's door is opened with your key and the shock sensor will be disabled)
MODE 3 Zero Delay and Shock Sensor Enabled (The alarm will sound immediately after the driver's door is opened with your key and the shock sensor will be active)
MODE 4 8 Second Delay and Shock Sensor Enabled (The alarm will sound 8 seconds after the driver's door is opened with your key and the shock sensor will be active)
LEAVING PROGRAM MODE
When programming is done, turn the ignition to OFF and replace the RADIO fuse.
The following users liked this post:
Steven503 (05-21-2020)
04-08-2019, 10:55 AM
#7
TECH Resident
My alarm is set to honk twice. If it only honks once or not at all it means a door or the hatch isn't fully closed. After adjusting the trunk latch it honked twice and I thought I broke something. Turns out that I had actually fixed something that I didn't know was broken lol
The following 2 users liked this post by bammax:
99Silver6.0 (03-02-2020), LilJayV10 (03-19-2020)
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04-09-2019, 03:20 AM
#8
On The Tree
Thread Starter
@WhiteBird
My car has never had this double honk issue before and I have not touched any of the electrical components within the car. I am sure this is an error of some sort
My car has never had this double honk issue before and I have not touched any of the electrical components within the car. I am sure this is an error of some sort
04-09-2019, 03:23 AM
#9
On The Tree
Thread Starter
My shock sensor has no visible dial. The sensor itself looks just like the OEM one minus the dial. The previous owner made no mention of an aftermarket alarm; he also lost the key fob for the car.
04-09-2019, 07:07 AM
#10
Disconnecting the shock sensor will tell you which is the case. If the honking continues then you can assume it's normal operation. If it stops then it really was the sensor.
04-10-2019, 07:00 AM
#11
It's a great $20 investment.BTW - The dial isn't visible from the front. The stock one is in the side of the case, recessed, and not labeled.
03-02-2020, 02:16 PM
#14
Weird.
This will definitely isolate the sensor and confirm if it's involved. No harm in doing this. It cleanly takes the sensor out of the loop. Please post back your results.
BTW - I've found a replacement for this sensor. I'm still working on testing the new part on the car, but the bench testing I've done has been phenominal: https://ls1tech.com/forums/stereo-el...ck-sensor.html
This will definitely isolate the sensor and confirm if it's involved. No harm in doing this. It cleanly takes the sensor out of the loop. Please post back your results.
BTW - I've found a replacement for this sensor. I'm still working on testing the new part on the car, but the bench testing I've done has been phenominal: https://ls1tech.com/forums/stereo-el...ck-sensor.html
03-19-2020, 09:28 AM
#15
TECH Resident
I have no problems what so ever on my 2001 Z28 (Sara-50K original miles). When I use the factory key fob (that came with the vehicle) to lock Sara, the horn will beep twice quickly, and the running lights (not headlights) will flash once.
The following users liked this post:
JimMueller (03-21-2020)