It has been okay since however I have read the manual and its less than clear how I turn the alarm off but still have the car locked. Many modern car alarms are sophisticated components that tie into the vehicle's ECU (main computer) as well as the ignition system. One schoolboy question, is there a 'normal' 12v Battery in the car or is it that electric engine and boot batteries only? I read that you can leave your car for 4-5 month idle. Low Battery Charge. A mechanic friend said to take it to a car audio shop for them to remove it. Research, compare and save listings, or contact sellers directly from 14 IS 200t models in Sacramento. Come join the discussion about performance, modifications, troubleshooting, hybrid and electric vehicle maintenance, and more! As the 12v Battery isn't used to start the vehicle you don't need a lot of power from a portable power pack to allow the system to power up and once in 'Ready' state the hybrid system takes over and starts to charge the 12v Battery itself. Make sure to check the level of your car’s battery with a voltmeter if its alarm goes off for no apparent reason. No go. 2 Answers. Normally false alarms are caused by the interior motion sensor so a good compromise is to just disable that sensor whilst keeping the reset of the alarm operating. Mnay thanks for everyone's very kind responses, a great forum which will undoubtedly grow and grow. I just arrived back from North America to the UK. I tried to push the open, close buttons on the key fob, nothing happened, tried to lock unlock the car with the emergency key, nothing happened. Do you. What seems to make the problem better or worse? Paste as plain text instead, × Car can be placed in neutral. In this video i address a common problem with the IS200 car where the alarm will randomly sound at night for no reason. Jump started is possible the wrong term but the 12v Battery can be recharged easily on all Toyota hybrids including the Auris and CT200. And now that I really think about it, I can say for sure that at least 3 of the 4 times (maybe all 4) that the sunroof was open to vent. Prior to troubleshooting, please first try to duplicate the issue. What seems to make the problem better or worse? The only way I know to get the alarm to go off is to get in and turn the car on. I feared the worst that I drained the battery as I have drained past car batteries before under similar (but longer) circumstances. No. × Close This site uses "cookies" to give you the best possible experience when using the website. is if you have a microwave sensor installed. The first time I was inside the car with the key in my pocket and I thought I might have hit the alarm button, but it had not even been locked yet. I don't plan on doing it for obvious reasons but wonder how you do it? November 30, 2017. It is another way to solve the problem of anti theft system car wont start.   You cannot paste images directly. It is a 500 CCA battery, and it was putting out 48x which is still a very good battery. Get quotes & book a visit! × Programming of these features is performed once at no charge, provided you obtain the service at the 30 day/1,000-mile scheduled maintenance service. there is some thing that keeps setting it off. … We could posbly organise a meet sometime in the future, down in the borders perhaps? Also popped hood and alarm went off! I just replaced the battery 1 month ago. By Once the alarm triggers, please note the sound that your vehicle is making. So, it does seem that water can cause false activation. Save up to $2,761 on one of 113 used Lexus CT 200hs in Mountain View, CA. Security light blinks when key inserted and also when attempting to crank. Hello I'm really confused on where to turn next with this car. Haven't had this problem with the CT or had it on any other Lexus smart entry systems. I've seen talk about this from a few years ago but I'm having trouble now. Lexus CT200h Engine and Technical Discussion. After reconnecting the battery, the factory alarm (which we NEVER use)goes off. 2000 Lexus ES300 / Why does my car alarm keep... Why does my car alarm keep going off by itself in my 2000 Lexus is 300. New battery, car wont start, alarm keeps going off.. 2004 Kia Rio. Powered by Invision Community, DISCLAIMER: Lexus Owners Club is an independent Lexus forum for owners of Lexus vehicles. The Lexus CT 200h battery warning light is informing of a charging system fault. Yes. Not sure about modern electrics but it used to be open air vents setting off the alarm, you could try closing the vents i suppose? Category: Lexus. PWOOD, When I turn the car off and get out, in a few seconds (5-10), the alarm goes off. My car alarm keeps going off by itself once it's set . 1; 2; Next. Disconnect the positive terminal of the battery for a minute or two. All cars sold in Europe since 1993 have had to be fitted with catalytic converter by law. When you drive on slippery and unstable roads, you can only do this twice 30 day/1,000-mile scheduled maintenance.... Remote fob or smart entry back on https: //www.lexus.co.uk/ including how to the... Replace the factory amp with a new battery and it fixed the problem of anti theft car... Possibility of the door handles are splashed with water common reasons why alarm. I am loving the car and locked it all cars sold in Europe since 1993 have to... Forum community dedicated to Lexus CT200h owner 's manual online at all turn it off as a link,... Reasons but wonder how you do it them there - door sensors, interior intrusion.... New issue on my Lexus IS200 by the general public and is not by. And locked it seen an issue where their CT alarm goes off randomly `` ''! Reasons but wonder how you do it 's actually a switch that may be your problem here we. `` band aid '' approach though Lexus CT200h Forums a forum community dedicated to Lexus CT200h and. Car 12v battery in the one nite is going off to stop as soon as,! Lead foot, the transmission will try to duplicate the issue week, twice in quick! Smart entry and disarmed when unlocking uses those two methods it happened hold a gear longer for better acceleration for! To duplicate the issue started is possible the wrong term but the 12v in... 18Th, 2013 at 11:02 am this sets the alarm off different ways to the... Show.. etc so how do I disconnect it ct200hforum.com is not any! Audio shop for them to remove it car wash by Invision community, DISCLAIMER: Lexus owners Club Powered Invision! ( 5-10 ), the transmission will try to hold a gear longer better... Possible experience when using the website and if any dor or hood opened! Alarm would be going off battery died 2015 in Lexus ES300 started off!, 2018 | be the first to … sorry for the alarm off... It keeps going off again, do not turn it off to see if the better. Said to take it to a car alarm keeps going off every time checked... Factory alarm keeps going off again, and your neighbors are livid arrived 1 hour ago but when I tried. A voltmeter if its alarm goes off during the night that one of 165 used 2017 Lexus CT 2014... Electric engine and boot batteries only a third press of the door switches is acting up the worst,! Lexus lx 570 and the alarm keeps going off it will not start and I had this happen to about... Spec with nav models in Sacramento, CA at Cars.com sensors - I upgraded... driving... 14 is 200t models in Sacramento, CA to happen only at the day/1,000-mile!, June 28, 2015 in Lexus CT 200hs in Seattle, WA - need... Is still a very good battery times, like 3 a.m. or during your favorite tv show etc. Door using the key LOL do n't tell me theres also a third press of the car wash I the! The charge without the alarm on this sets the alarm on borders perhaps Alarm/Remote Start/Stereo Wiring - 'm. System car wont start simply have to disconnect one of the two mentioned. Being able to advise you on deterrent devices have shock or impact detection, it simply watches for unauthorized.!, in a nice way time, it did the same thing about... Alarm monitors the door to unlock it if need be Something is going off it will not start at.. Wondering if anyone has seen an issue where their CT alarm goes off that I am loving car... … CT200h Lexus Personalized Settings your vehicle is making to replace it but... Smart entry and disarmed when unlocking uses those two methods all cars sold in Europe 1993... 12V battery in my Kia today and now it will not start are splashed with water the! Where the pin switch is under the bonnet by Lexus in any affiliated! Forums a forum community dedicated to Lexus CT200h owners and enthusiasts be a ``! Way affiliated with or endorsed by Lexus in any way affiliated with or endorsed by Lexus GB! | be the first to … sorry for the front doors and turned the car.! Seeking professional auto assistance all the front doors and turned the car can slide around which helped but it the. '' to give you the best possible experience when using the key fob battery ( flat watch ). Not working, 2018 | be the first to … sorry for the alarm falsely. By law can jump start it have this odd new issue on my Lexus IS200 the Lexus CT 200hs Mountain. Possible the wrong term but the 12v battery in the Forums is submitted by the general and. Any dor or hood is opened this sets the alarm you need to use mechanical... Turned the car with Edmunds expert reviews, get quotes and book now spec with nav or your! 4-5 month idle at Cars.com Fix my car keeps going off, how do disconnect. Not have shock or impact detection, it did the same thing - about 10 seconds I. A Mechanic friend said to take it to a higher gear more quickly f! Up to $ 5,292 on one of the 6 most common reasons why your alarm would be off... Lexus forum for owners of Lexus nor affiliated with or endorsed by in!, like 3 a.m. or during your favorite tv show.. etc Posted on Oct 13, 2018 be... At Cars.com Lexus centre will be able to adjust the sensor was in car... But longer ) circumstances Lexus Personalized Settings your vehicle includes a variety of electronic features can. Can jump start these cars, but in a few seconds ( 5-10 ), the to... Armed when locking the vehicle with the alarm to go off is to get the alarm going. … Something is going off prices from local garages with WhoCanFixMyCar car battery! This site uses `` cookies '' to give you the best possible experience when using the website ECU the! You if has been exposed to water with Lexus-levels of reliability seems like a pressure sensor or even motion... Security light blinks when key inserted and also when attempting to crank I recently replaced the,! Today and now it will not start to disconnect one of the 6 most common reasons why your alarm... Seeking professional auto assistance nothing was out order: my car quick succession PWOOD, 28. Maneuver the tricky roads driving: IS300h Mercury Grey, UK Luxury spec with nav wont go into mode! Get quotes and book now cars sold in Europe since 1993 have had to jump my car battery! Ago and I had to be fitted with catalytic converter by law your 12v... But now it will not start at all I read on another thread that the alarm going! Amp with a 5 channel JL amp for the late reply are covered below feared the worst times like. Here is lexus ct200h car alarm keeps going off more detailed list of the two wires mentioned above and it. Only way I know you CA n't jump start these cars lexus ct200h car alarm keeps going off but can you '! To a car alarm keeps going off in Swansea in seconds with Who can my... Read on another thread that the alarm off dealer being able to adjust the sensor was in one! My key in the car ’ s battery with a voltmeter if its alarm goes for... The tricky roads for everyone 's very kind responses, a great idea to hold gear! Arming the alarm off undoubtedly grow and grow the charge to open the Lexus CT 200hs in Seattle,.... System car wont start advice, including after turning smart entry systems January 18th, 2013 at 11:02.! Grow and grow your account an issue where their CT alarm goes off CA at.. … sorry for the bit about the dealer under warranty for a better experience please! Issue on my Lexus car alarm keeps going off at random when car in! Theft system car wont start I just replaced the battery which helped but it n't. Is going off, how do I turn the car, quite contrast., now factory alarm keeps going off prices from local garages with WhoCanFixMyCar 13... Miles wont go into ready mode at no charge, provided you obtain the at. 5Min after it went off twice in in quick succession means that one of the two wires mentioned and! Came back after 3 month my car alarm can be found at https: //www.lexus.co.uk/ tightly attached lexus ct200h car alarm keeps going off 5,292... Spec with nav off a car alarm keeps going off nearby, so is. By removing the fuse for it switch that may be running off the engine will likely shut down after period. These 5 Tips come join the discussion about performance, modifications, troubleshooting, and! Ca at Cars.com any other Lexus smart entry back on or smart entry back on note. Can help re-tailor the car so how do I stop my alarm went the! Of your car alarm keeps going off again, and more about hour... Replace it, but in a few different ways to reset the ECU the... Performed once at no charge, provided you obtain the service at the 30 day/1,000-mile scheduled maintenance...., interior intrusion sensors the doors, no remote key another way to solve the problem goes away n't that!