I guess you're relatively new here and hadn't noticed all the thread similar to yours.
Please get a new horn asap.
1. If you can't see the inside mirror of the car ahead, that driver can't see you.
2. I drive, and idle, with my finger on the horn.
At first, I didn't like the button placement, but it is the cat's meow (whatever that is).
While here, may as well...
Note to new Elise & Exige Owners:
1. These cars have large (i.e. dangerous) blind spots. Multivex mirrors are NLA, but RLS (Really Light Stuff) offers very good tape-on replacements.
2. The horns are way too weak (quiet). There’s an inverse relationship: smaller the car, louder the horn needs to be.
Get something such as a Stebel Nautilus.
Stock: “Excuse me”
Stebel: “HONK! LOOK OUT!”
Remove the stock horn; replace with louder.
3. The early cars came with misaimed and dim headlights. If you drive at night, convert to HIDs. While better than stock halogen bulbs are available, HIDs throw more light. Stay around 5000k.
4. Ensure your car has had the work required by the recall for oil line fittings done. You could lose an engine and/or spin in your own oil.
5. The best transmission lube I’ve found is Redline MT-90 plus a little Power Punch Extreme Gear Oil Additive. (Note that it takes two changes to get rid of the previous lube.)
a) Early cars have wobbly shift towers. Look up Stan’s Mod (bolt and spacer) and Sector 111 long thru bolt that terminates under car. (Can’t find it on their site right now for some reason.)
These (lube, mods) make a huge change in shifting.
6. As per some engine builders on these sites, wait at least 10 minutes after coolant has reached full operating temp before engaging cam switchover.
7. Visit the Uber Thread!
When my kids hit the stock horn in my Elise (while playing in the garage not driving!) it hurts my ears. I seriously doubt that you couldn't hear it in a truck five feet away. OTOH, you are right about blind spots. Like a previous poster, I was behind my wife at a stop light recently and she thought I'd gotten lost as she couldn't see me! She drives a Chevy Volt.
05 Elise, ST, sports, touring, hardtop, DBA 4000 slotted discs, Ferodo DS2500 pads, Sector 111 gpan3, EP Tuning Quickrack, Pro Alloy rad, DS brace, HnT pad, front and rear tow hooks, CG lock, ORE double cup holder (caffeine for track); '86 911 Targa (sold); '68 MGB (being restored)