2003 Volvo V70 horn/alarm comes on and won't stop if I remove the key from the ignition. I tried pushing Unlock on remote but does not stop it. Only way to stop it is to reinsert key in ignition and turn. What can I do to reset this so I can remove my key and not have the horn/alarm sound?
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Re: Alarm sounds everytime key removed from ignition?
There is a switch either in or on the driver door that turns on the interior lights and tells the module the door is open and the key is still in the ignition, this sounds the alarm, check all the doors and make sure they turn the interior lights on and off when the doors are opened and closed.
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The only one you can reset is the "time for regular service" message.
To reset this, turn ignition off, hold the trip reset button down and turn key to position II. Keep holding the trip reset until you hear a ping noise and the orange triangle flashes. Immediately release the trip reset and turn the ignition off. When you start the car next, the message will be gone.
Other messages like "SRS Service required" or "Alarm system service required" can only be rest with a OBD code reader.
The alarm system somehow got activated , this is usually because the battery becomes discharged or disconnected try doing this: Remove the key from the ignition disconnect the negative battery terminal put the key back in and turn to ON exit the truck and leave door open reconnect the battery terminal get in and leave door open, if the alarm horn stays off it should start.
Sound like you are dealing with a bad battery connection,or even a bad ignition switch,Volvo at your year had ignition related problems where the ignition switch would go past position 1,this was due to ingition column lock,On your type of make and model it is not adviseable you crank the engine,and recrank the engine if it not starting your immoblizer is done every one key ignition cycle,and can create false message,or DTC (trouble codes),
There is a cable that connects your gearshift to the ignition switch, when this cable stretches, it does not allow the gearshift assembly to move when you have the key turned. Removed the assembly around the gear shift assembly and inspect this cable. Removed the cable and manually actuate the lever. See if this fixes the problem as it is common in the S70/C70/V70s that are pre 2000
The Alarm on my Mercedes ML320 sounded every night, then it started doing it more often, Showed it to the dealer he says it's the 'Tow Sensor', that needs to be repaced. $700, down the drain. I have already started hating this car, it eats $500-600, every 6 months...