Alarm problem

[Klattu]

Hi Guys.
Help needed.

I'm in Australia on vacation at the moment and won't be back till March, a friend of mine is looking after the Supra whilst I'm here, he's just sent me a message, this is it in full......

"Supra alarm problem
A couple of days ago the car alarm went off for no reason. Silenced it with the key fob and thought nothing of it.
A few hours later, went off again.
No car thieves were obvious and key fob silenced it.
Sadly, same thing again but only 30 minutes later this time.
Got me worried because by now 10pm . Not long after , alarm again. This time couldnt shut it off!
Looked on the Toyota and Supra sites and they suggested low battery commonist cause!
Sure enough, put charger on and battrry at 0%
Alarm still going so decided to see if the engine would start for quick charge which it did fortunately.
Ran the engine for 20 mins then fob worked to cut alarm. Continued with the external charger for 3 hours and battery full.
Only problem then was that the alarm was permanently off and couldn’t be initiated.
Supra site again which advised reset by removing -ve battery terminal for 1 minute - tried this but no joy.
So the current situation is that the car is locked and has steering lock but no alarm.
Looked for further ‘cures’ but reluctant to try cos can cause cpu problems.
Thought I’d better let you know and wondered if you had any bright ideas "

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[nanaisu]

How's the ODB port look? You're not leaving an ODB reader in it? Do you have any sort of anti-theft or third party tracking system installed?

 

[concept]

I've seen mention that the Supra's alarm ECU can enter "safe mode" after repeated triggers or power interruptions. This may require a dealer-level scan tool to reset.
If there is a Security or Alarm fuse in the fuse box, pull it out for a few minutes and reinsert.
Also, I think that when you disconnect the negative terminal, it should be for 10-15 minutes, not 1 minute.

 

[Klattu]

How's the ODB port look? You're not leaving an ODB reader in it? Do you have any sort of anti-theft or third party tracking system installed?

No....and there's nothing plugged into the ODB port

 

[Klattu]

I've seen mention that the Supra's alarm ECU can enter "safe mode" after repeated triggers or power interruptions. This may require a dealer-level scan tool to reset.
If there is a Security or Alarm fuse in the fuse box, pull it out for a few minutes and reinsert.
Also, I think that when you disconnect the negative terminal, it should be for 10-15 minutes, not 1 minute.

Look like a trip to my local Toyota is in order then to have it reset ... would it be covered by the warranty ?

 

[concept]

Look like a trip to my local Toyota is in order then to have it reset ... would it be covered by the warranty ?

It should be, as long as your car is not over 3 years old. That's the warranty length we have here in the US.

 

[razorlab]

It should be, as long as your car is not over 3 years old. That's the warranty length we have here in the US.

DME is covered under the 60k/5yr powertrain warranty boomer blob.

In case you want to argue:

 

[Klattu]

It should be, as long as your car is not over 3 years old. That's the warranty length we have here in the US.

I'm in the UK, we have a set up called an extended warranty from Toyota, so if you keep taking your car back to the main dealership for servicing has per scheduling, the car is further covered for an extra 5 years after the initial 3.

 

[concept]

I'm in the UK, we have a set up called an extended warranty from Toyota, so if you keep taking your car back to the main dealership for servicing has per scheduling, the car is further covered for an extra 5 years after the initial 3.

Nice!

 

[razorlab]

I'm in the UK, we have a set up called an extended warranty from Toyota, so if you keep taking your car back to the main dealership for servicing has per scheduling, the car is further covered for an extra 5 years after the initial 3.

Yea that is a nice perk in the UK for sure. Here in the United States, again, there is a 60k/5yr powertrain warranty to which the DME is a part of. Concept is wrong as usual.

 

[Klattu]

"Toyota UK offers a, 10-year / 100,000-mile warranty program, combining a 3-year manufacturer warranty with up to 7 years of service-activated warranty (Toyota Relax). This coverage applies to new and used vehicles, extending 12 months with every qualifying service at an approved Toyota dealer until the vehicle reaches 10 years or 100,000 miles."

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