# Horn blaring in the rain **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** forester, subaru\ **Created:** [June 27, 2010, 5:24pm UTC](https://community.cartalk.com/t/horn-blaring-in-the-rain/50962 "2010-06-27T17:24:55Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![TomasC](https://avatars.discourse-cdn.com/v4/letter/t/cab0a1/32.png) [@TomasC](https://community.cartalk.com/u/TomasC)\ **Post date:** [June 27, 2010, 5:24pm UTC](https://community.cartalk.com/t/horn-blaring-in-the-rain/50962/1 "2010-06-27T17:24:55Z")
One rainy mornin G we were awakened by a bevy of neighbors, who informed us that our car alarm (blaring horn) was blaring and wouldn’t shut itself off. It turned out that we had left our moon roof\* open, and this somehow set off the alarm. I had to disconnect the battery to stop the blaring, and I couldn’t reconnect it without having tphe horn start up again for two days. After that tme the alarm operated normally; we took it to the dealer, who couldn’t’t find anything wrong. \*Why isn’t it a sun roof or sky roof? ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [June 27, 2010, 8:03pm UTC](https://community.cartalk.com/t/horn-blaring-in-the-rain/50962/2 "2010-06-27T20:03:03Z")
\*Why isn’t it a sun roof or sky roof? A true sun-roof has no glass so to differentiate between it and one that has the glass it was named a moon-roof playing on sun and moon. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 27, 2010, 8:11pm UTC](https://community.cartalk.com/t/horn-blaring-in-the-rain/50962/3 "2010-06-27T20:11:09Z")
Back in the day of the custom van, there was a glass panel on the roof that was hinged and that flipped up or could be removed, and it was always called a sun roof. When they made these where the glass or metal panel slid back under the roof, they started calling them moon roofs. Tester ---
**Author:** ![oblivion](https://avatars.discourse-cdn.com/v4/letter/o/3ab097/32.png) [@oblivion](https://community.cartalk.com/u/oblivion)\ **Post date:** [June 27, 2010, 10:58pm UTC](https://community.cartalk.com/t/horn-blaring-in-the-rain/50962/4 "2010-06-27T22:58:44Z")
I think the alarm didn’t go off, but instead with the sun (or moon, or Mars, or whatever) roof open that the steering wheel got wet and this caused a temporary short, causing the horn to activate like you’d pressed the horn button. Once it dried out, good as new.