Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

LinkBack Thread Tools Display Modes
Old 04-26-2007, 02:50 PM   #1
Registered User
Join Date: Apr 2006
Location: Michigan
Posts: 10
Alarm Horn

I have a quick question: when the alarm is activated, the lights flash but the horn doesn't sound. From other posts, it looks like the alarm horn needs to be replaced. There appears to be two horns in the compartment by the battery - do both need to be replaced, or just the top one (high pitch, I believe)?? It looks like the bottom one is v. hard to get to....



fahlmanb is offline   Reply With Quote
Old 04-26-2007, 03:05 PM   #2
Registered User
TriGem2k's Avatar
Join Date: Sep 2005
Location: Los Angeles, CA
Posts: 1,431
Send a message via AIM to TriGem2k
The horn should not sound when the alarm is set. The only time it should beep is if there is an open circuit. If you want the alarm to beep when you lock the car click the lock button twice. This should cause it to beep immediately.

There is nothing wrong with your horn....Unless you honk the actual horn and nothing happens.

2001 Boxster Artic Silver / Black Interior
-GT3 Front Bumper w/ Lip
-Side Skirts
-Gemballa Exhuast and Cats
-O.Z. Racing 18" Wheels
--18X8.5Front 18X10 Rears
-Michilen PS Tires 225/40/18 & 285/30/18
-5mm Rear Spacers
-Porsche Door Sills
-H&R Springs
-Powerflow Intake
-B&M Short Shifter
-Pioneer Avic-F90BT Navigation
-Focal Polyglass 165VR3
-Alpine PDX 5 Amp
-Bose OEM Subwoofer & Midrange
-Audio Controld DQXS (DSP)
TriGem2k is offline   Reply With Quote
Old 04-26-2007, 03:40 PM   #3
Registered User
Join Date: Apr 2006
Location: Michigan
Posts: 10
Sorry - I meant that when the alarm is set off (e.g., movement inside the vehicle when the alarm is set) the lights rapidly flash, but the alarm doesn't sound (also doesn't sound when pushing lock button twice)...
fahlmanb is offline   Reply With Quote
Old 04-26-2007, 04:44 PM   #4
Registered User
Join Date: Aug 2006
Location: Toronto
Posts: 32
Your horn is dead or the fuse is blown. The alarm horn is 1 inch to the right of the battery if your facing the windshield.
eric95 is offline   Reply With Quote
Old 04-04-2008, 06:23 AM   #5
Registered User
Join Date: Apr 2008
Location: Newcastle upon Tyne
Posts: 2
No alarm sounds

I found your alarm problem post on this forum, as I have the exact same symptoms, I wondered if you came to a solution?

I've checked the horn (the electric disc one, near the battery) on a separate battery and come to the conclusion that it's dead. But, on ordering a replacement from the OPC, they say that this horn is only used if you've left something open on the car when you try to remote alarm it. i.e. beeps at you.
n11tac is offline   Reply With Quote
Old 04-04-2008, 07:31 AM   #6
Registered User
Lil bastard's Avatar
Join Date: Feb 2008
Location: Du Monde
Posts: 2,199
The Euro models have a totally different alarm system with separate siren and backup power supply.

North American models use the car's regular horn.

Does your horn work normally when activated by the Steering Wheel?

If so, you have an issue with the Alarm itself.
1990 Porsche 964 Carrera 4 Cabriolet
1976 BMW 2002
1990 BMW 325is
1999 Porsche Boxster
(gone, but not forgotten)

Never drive faster than your Guardian Angel can fly!
Lil bastard is offline   Reply With Quote
Old 04-04-2008, 08:06 AM   #7
Registered User
Join Date: Apr 2008
Location: Newcastle upon Tyne
Posts: 2
Yes - driver's horn OK.
Alarm system can be 'primed' with remote key fob. When alarm triggered, side lights flash. Do you reckon that the main air horns should be sounding the alarm via the car's main battery?
I've read that there is a back-up battery. It's purpose is to sound the alarm should the main battery be disconnected and I believe this will energise the disc horn. If I'm correct, do you know where this battery is located?
I've also metered the disc horn (which doesn't work on a separate battery) supply in alarmed condition and this seems to vary between 9V and 11V DC in sync with the flashing indicator lights. Bearing in mind I used a digital multimeter, this tells me that the supply is rising and falling and thus sounding the horn accordingly.
My local Porsche dealer has suggested they have a look at it. With labour rates at 104 an hour and a replacement disc horn at 8, I've gone for the cheap option (DIY) in the first instance.

n11tac is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 03:08 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page