AJI Posted February 12, 2004 Share Posted February 12, 2004 I changed my battery last night only to find that my key-fob now doesn't work and my alarm keeps going off and that I can't start the car (due to security system). Does anyone know what to do in these situations? p.s. I don't know the code for the radio/cd security either !! It's all going t1ts up!! Link to comment Share on other sites More sharing options...
Steve Cargill Posted February 12, 2004 Share Posted February 12, 2004 Phone Matt H and say please a lot Not sure of his number, do a search on Sextons. Link to comment Share on other sites More sharing options...
Roy Posted February 12, 2004 Share Posted February 12, 2004 moral of the story - get mattH to do it then if something goes wrong you can go around and point fingers 01622683044 - sextons Link to comment Share on other sites More sharing options...
Branners Posted February 12, 2004 Share Posted February 12, 2004 try pressing and holding down both buttons on the fob for about 10 seconds and see if that does a quick reset on it. I also found a problem where I couldnt arm the alarm as it would keep going off, I went round each sensor and gave it a good push and 10 times and the problem went away, so its possible the door, boot and bonnet sensors are getting a bit iffy as the cars get older. JB Link to comment Share on other sites More sharing options...
Paul Laing Posted February 12, 2004 Share Posted February 12, 2004 Have you got a manual for your Supra mate? I have one at home which might tell you how to reset the alarm etc. Theres loads of info about the alarm in there Link to comment Share on other sites More sharing options...
AJI Posted February 12, 2004 Author Share Posted February 12, 2004 I've just phoned my local toyota garage up and they say I have to take out the whole cd/radio unit, then send it away in which it will be re-programmed (or de-securitised). It will then be sent back to me in which I enter a code. Blimey !! What a pi$$ take this is going to be. Surely it's not that complicated is it ? I thought there would be a database of VIN numbers and codes etc. on Toyota's computer system. Link to comment Share on other sites More sharing options...
Paul Laing Posted February 12, 2004 Share Posted February 12, 2004 Have a word with Gaz, before i bought my car from him it got a new battery, and my alarm and radio is fine. He might know what the mechanic did? Paul Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 12, 2004 Share Posted February 12, 2004 No probs when changing your battery Paul- sorry AJI. Toyota should have a db of codes though, Rover, Ford etc etc do?! Gaz. Link to comment Share on other sites More sharing options...
Paul Laing Posted February 12, 2004 Share Posted February 12, 2004 Oh well, worth a try! Hope i never need to change it again!!! Don't want anything like that to happen, try another Toyota garage? Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 12, 2004 Share Posted February 12, 2004 I did have a nightmare with your alarm at one point Paul, where the thing wouldn't disarm - I had to go home (12am) and get another fob and pick it up... Then that one wouldn't work a few days later - wierd. I always kept both fobs with me after that. I hate UK spec alarms, they are terrible systems. Gaz. Link to comment Share on other sites More sharing options...
Paul Laing Posted February 12, 2004 Share Posted February 12, 2004 Thats happened a few times, iv'e been out and i can't lock it, or unlock it!!! Only once or twice like, maybe the batterys need changed Link to comment Share on other sites More sharing options...
AJI Posted February 12, 2004 Author Share Posted February 12, 2004 Thanks for all your suggestions so far.... I've just been out for the last hour trying them all but still can't get the engine started. I think the imobiliser has kicked in and I can't dis-arm it. I spoke to the garage again and one of their machanics seems to think that they do have a database where they can reset radio security etc. But I've no way of getting the car stared to be able to get to the garage in the first place. So far I have tried the following: -pressing both buttons for 10 or more seconds on the key fob. -taking out both ecu fuses for over a minute. -checking doors and windows are closed. -trying my backup key fob. -disconnecting -ve on battery with ignition turned on. Is there anything else that I can try? I take it this is not what happens every time you need to change the battery? Link to comment Share on other sites More sharing options...
Scooter Posted February 12, 2004 Share Posted February 12, 2004 I had the same thing with my UK alarm (see here for full thread ) but basically to cut a long story short an autoelectrician friend managed to disconnect the alarm to get me back up and running, but was not able to fix it. I sold it like this but if you end up looking at the costs of getting it to Toyota + whatever they will charge, it might be better value to get a new run of the mill Cat 1 installed where it is. only time i've had problems with any of my sup's has been via alarms, know how you feel at the moment and realise the above is not what you want to here (BTW after all the troubles getting it started i was expecting problems with the stereo but it was fine and didn't need to be re-coded, i think because it had not been touched/tampered with?) Link to comment Share on other sites More sharing options...
AJI Posted February 14, 2004 Author Share Posted February 14, 2004 Well after trying every possible suggestion I had to get my Supra towed to the Toyota garage this morning. It needs the immobiliser unit sent away and instead of getting it re-set they send a new unit out to replace it. Which means I'll get a brand new set of key fobbs (wehey!!) New unit is going to be around £150 if I remember correctly. So heres some advice to all you Supra owners ..... NEVER let your battery go flat !! Even though I never had my alarm armed whilst it was in winter storage I never realised that the main battery still drains power to the alarm/immobilser system for its respective power supply battery. The reason my old battery went flat was a combination of a severe cold week and this unknown drain of power. This still occured even though I always ran the engine for half an hour every Sunday ! The good thing is that my car will be back on the road on Wednesday Link to comment Share on other sites More sharing options...
MONKEYmark Posted February 14, 2004 Share Posted February 14, 2004 my heavy duty battery just died, getting my small jap terminals changed over to the bigger uk terminals so its easier to get a battery for it in future Link to comment Share on other sites More sharing options...
400BHP Posted February 16, 2004 Share Posted February 16, 2004 Originally posted by AJI The reason my old battery went flat was a combination of a severe cold week and this unknown drain of power. This still occured even though I always ran the engine for half an hour every Sunday ! Half hour of Idling probably wont even put back in what you took out by cranking the car when you started....! The alternator puts out the same voltage no matter what speed the engine is doing, but the amperage goes up with higher speed, the car really needs a run, or a trickle charger, the latter being more preferable. Link to comment Share on other sites More sharing options...
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