I have a 2004 Prius with 191K miles. When purchased in November of 2008 the 12V battery was replaced (mileage at the time was 70K). Over the last 2 weeks my alarm has been going off daytime, nightime with no regularity.
I have replaced the battery in the FOB (I only have one) and did this yesterday. Last night the alarm went off 4 times between 11pm and 1am until I disconnected the 12V battery.
My Prius alarm keeps going off. Only way to turn off is to put fob in car and start. Is there a fuse I can pull or a wire I can cut? I don't have the $ to get the alarm fixed.
View 3 RepliesWe just bought a very clean 06 XL with low mileage. After getting home and getting out of the car, I went back and opened a door to retrieve some papers. The damn alarm went off, and of course the keys were in the house. The doors had not been locked. It does this every time. We don't lock the car in the carport, and if anyone opens an (unlocked door) the alarm sounds. I tried putting it into valet mode, but no difference. Called Toyota customer care, and they said according to the vin, it did not come with a factory alarm, so must be a dealer thing. How to disable this thing or change the settings? It sure looks like a factory alarm.
View 5 RepliesLast night my alarm (honnking horn, lights flashing) went off when my 07 Prius was sitting in the garage with the garage door closed. The only way to stop the alarm was to start the car and leave it running.
At 4:00 this morning it went off again. The only thing I can find amiss is that the battery icon on the main screen registered very low (two purple bars).
I have an issue, and I don't know if it's kids, animals, or the car itself. Last night it happened at 3am, tonight I'm sitting on the couch at 12.30am and it just went off again....
I don't see anyone out there around the car, not sure I saw anything last night either. Is there a cause for this? I just replaced my 12v battery in March, have a dead FOB smart key in a fire box (it's up on top of everything in the box). My current key was lying flat on the bench, nothing on top of it.
Just woken up for the 8th time to the sound of my Prius alarm system sounding. It's an EU prius with the default alarm in it and every time it goes in for a service I tell them about the problem. They tell me they have lowered the activation threshold. I never notice any improvement.
A few questions
1. Is there any adjustable 'activation threshold' on the prius alarm system or are they just fobbing me off?
2. I have pro-tem half solved the problem by removing the fuse that leads to the horn. However a second siren still sounds despite the horn not souding. Where is this siren speaker located as I intend to disconnect that too.
A few observations.
1. It is almost impossible to get the alarm to go off deliberty, such as by waving hands around inside the veh, trying door handles, rocking the veh, hitting the glass, etc. For that reason, I am not sure I believe therefore that it is an intermittent sensor issue as I have "banged every door" so-to-speak.
2. I have checked the battery level and while all the readings are a bit on the low side, ultimately all the results are within the recommended thresholds as defined elsewehre on this site. With that said the car is 4 years old, could the battery be malfunctioning in other ways?
3. Pressing the button under the steering column does not affect whether the alarm activates or not.
I have a 2005 SC430 and all of a sudden the alarm is going off. Twice today once at 6am and then at 7.30am. Since then (it's nearly 2.30pm) - nothing.
I've not changed anything inside the car since it went off this morning - and nobody was trying to get into the car. The problem of course is that it autolocks and turns on the alarm.
This has only just recently started happening. Is there anyway just to lock the car and disable the alarm?
How do I disable the backup alarm on the Generation II Prius?
View 2 RepliesI have 2004 prius, 100,400 miles. No problems ever and all of a sudden, driving as usual, vsc, brake, !, and alarm buzzer on the entire time car is running or door opens. Brake seems harder to stop now. Right rear wheel is grinding when brakes are applied. jerks a bit at slow stops.
View 19 RepliesMy Prius alarm goes off with no reason day and night. I did check everything like door and hatch back, they are properly closed and nothing could have caused the alarm to go off. I brought my car for checking but what the mechanic can do is just set the horn off, they couldn't find the cause.
View 12 RepliesI have a 2003 Camry. Recently, the dash board signal has started to turn on i.e. Battery,abs,brake, etc. when I accelerate. Around 1000 rams the light come on,then will turn off below the 1000 rpms. Now, at 2000 rpms the heater fan will increase speed to maximum.
I had the battery tested and it checked out ok. Could this be the alternator?
My 2005 Prius is 6 and a half years old and I have encountered a problem with an outside alarm that is one beep about 2 seconds long. I have checked my manual and I have found two possibilities, but, they don't seem to apply. Last week was the first time I had to go in and reset my maintenance needed reminder because my service station forgot to reset it after the last oil change. I am afraid in the severel attempts to do this I might have reset something else as well!
The outside 2 second beep occurs when the car is in my garage and the car is NOT locked. It also only occurs if I am outside of the car and have the key fob with me. It happens with either key fob near the car. If I lock the car I don't have a problem. It is as if everytime I come near the car with my key fob that it is reminding me that the car is unlocked.
I have a 2006 with 155k miles. I took it into the dealer for a mini service this week. Drove home after the service was complete, then drove to work yesterday. On the way home an alarm sounded and the red triangle light with !, the break system light (O) with !, the VSC light and the engine CHECK light came on.
A friend used his scanner to read the error code for me and it reported a "p0a80" code. What does this code mean? Replace the hybrid battery?
My Lexus SC430 parking sensor alarm sounds intermittently while I am driving. (No, I do not tailgate the car in front.)
It has happened several times, all but once when it was raining. On that one occasion, the sun was shining. It happened again today while it was raining, and continued to sound after the rain had stopped, but the road was still wet.
What could be causing this to happen, and how can it be prevented. I have decided to fit an ON-OFF switch, if the problem cannot be solved conventionally.
I have a 2004 Hyundai Accent. The factory alarm goes off intermittently and the central locking engages at times without warning.
I took it to an Auto Electrician who checked it over but couldn't work out the problem. So i took it to the dealer who said it was most likely the bonnet sensor. I wasn't convinced but they went ahead and charged $150 to diagnose and adjust the sensor and said everything would be fine.
Within one day of being 'fixed' the problem has reappeared. I am getting sick of disconnecting a battery terminal every night....
I'm a new Prius owner (<1 month) and have a hopefully easy problem to solve.
View 7 RepliesTwo days ago, my horn began honking for no reason...as if the anti theft alarm was going off. I was able to shut it off only by putting the key in its ignition. Last night, the possession by the devil was complete and at 10:30pm, my car began to honk (same as before) incessantly... and I wasn't able to turn it off. This happened about 5 time within 30 minutes. I tried to disconnect the battery but of course, the Prius designers placed the battery in a location that makes it impossible to disconnect. Why this horn malfunction is occurring?
View 5 RepliesI bought a 2007 Prius this week and I am having trouble with the door lock/unlock procedure. I have read and re-read the manual and feel I am doing everything correctly. What is happening is I can lock the car, either with the push button on the handle or with the key fob. When I return to unlock the car 2 things may happen. Either I get within 2 feet of the car and the alarm goes off or I can get close enough to touch the door handle and then the alarm goes off. Either way, I then have to use the fob to turn off the alarm noise and then I can unlock the car. All rather embarrassing and I'm getting tired of looking like an idiot! The worst part is when I was back at the used car dealer briefly yesterday and went to show him the problem, it behaved perfectly which was the only time it worked ever for me. I have tried both of my key fobs and the same thing happens with both of them.
View 13 RepliesMy 2005 Ford Escape's alarm goes off intermittently throughout the day and night. This usually occurs after the door ajar light comes on while I'm driving. All doors are secure and I've even replaced the latch assemblies on the driver's door and rear hatch (these are the most used doors). There must be something in this circuit that is causing this to happen. It is frustrating having the alarm go off in the middle of the night when there are no obvious intruders. How can I resolve this issue without replacing any more latches or spending a large amount on diagnostic tools from Ford?
View 9 RepliesMy 2008 Prius (111,000 miles) had all the panel alarm lights go on and lost power while I was driving on the freeway. After turning off the vehicle and letting it “rest” for 10 minutes, it restarted with only the red triangle alert light remaining on and was able to drive to my dealer service (about 40 miles) with no incident. The diagnostic code indicates that the inverter has failed, but the technicians are not able to confirm that this is the problem, since the system is now running. I was able to drive it home with no problems or warning lights. As this is a $4,000 part, I would like to know if this is a likely, or even possible, scenario for an inverter failing, or could it be another problem? Note: 3 months ago the auxiliary battery was replaced following the same circumstances.
View 13 RepliesI just received my Scangauge II. Hooked it up and while under ice throttle it stays on but when I either attemp pulse and glide or straight stealth mode it shuts off? I am in process of reading instructions
View 9 Replies