# Buzzer Insanity!

**URL:** <https://community.cartalk.com/t/buzzer-insanity/73541>\
**Category:** Maintenance/Repairs\
**Tags:** rabbit, volkswagen\
**Created:** [July 15, 2012, 10:46pm UTC](https://community.cartalk.com/t/buzzer-insanity/73541 "2012-07-15T22:46:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![BeerGoggles](https://avatars.discourse-cdn.com/v4/letter/b/6bbea6/32.png) [@BeerGoggles](https://community.cartalk.com/u/BeerGoggles)\
**Post date:** [July 15, 2012, 10:46pm UTC](https://community.cartalk.com/t/buzzer-insanity/73541/1 "2012-07-15T22:46:46Z")

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Help! I just recently purchased a 1984 VW Rabbit convertible. I bought it knowing that the “idiot” light and buzzer for the oil sensor comes on when the engine revs at around 2100 RPMs, and won’t shut off until I turn the car off. I replaced the oil sensor however it made no difference. Even when I disconnect the oil sensor unit, the buzzer still turns on! Any ideas out there will be greatly appreciated.!

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**Author:** ![RemcoW](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/remcow/32/2471_2.png) [@RemcoW](https://community.cartalk.com/u/RemcoW)\
**Post date:** [July 15, 2012, 10:55pm UTC](https://community.cartalk.com/t/buzzer-insanity/73541/2 "2012-07-15T22:55:03Z")

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Are you sure the oil pressure is correct? Maybe that sensor is trying to tell you something…

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**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\
**Post date:** [July 15, 2012, 11:20pm UTC](https://community.cartalk.com/t/buzzer-insanity/73541/3 "2012-07-15T23:20:33Z")

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This is going back a long way but if I remember this car has a “dynamic oil pressure sensor system” involving a high pressure switch, a low pressure switch, circuitry tied into the tachometer and a buzzer mounted inside the instrument cluster. I recall replacing an L-shaped circuit board on the backside of the gauge cluster with some frequency after proper oil pressure and switch operation had been verified.

I think a VW specialty forum might offer you more help.