Question about 2001 Toyota Avalon

1 Answer

Transponder or security system problem

Hey i lost my keys and had to replace the ecu,transponder with keys and barrel which i got from a local toyota wrecker after hooking it all up, the car turns over but doesnt fire??then after 5 seconds(of turning over) there is 3 loud beeps from the security system..the light flashes every second or so but nothing random..it also beeps the same when the key is removed from the key hole..do i need the transponder key to open the door first???does the car need a master reset to reconsise the new parts??disconnecting the battery doesnt reset it....as its with the security system do i need an auto sparkie or need toyota to have a look??please help me..regards hayden

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 149 Answers

I would have a dealer look at it those alarms are very complicated..

Posted on Oct 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why does the security light flash even when key is on and engine will not start?


The security light flashing is the indicator. The fuel pump is disabled by the ECU because the immobilizer system does not recognize the transponder chip inside the key.

There could be several causes.
a. Either the transponder chip inside the key is bad, not programmed, or missing
b. The antennae that is located around the ignition lock is bad and/or not reading the transponder chip inside the key.
c. There is a wiring issue between the ECU and antennae.
d. The ECU is bad

You may want to seek out a qualified mechanic or automotive locksmith for help, not all mechanics and/or locksmiths are capable of handling the immobilizer systems on these vehicles. So be clear when discussing your problem to them and make sure they are capable of handling this type of problem.

If the key is not original, check to see if it is a cloned key. Some cloned keys use batteries, when the battery inside the key dies, it no longer communicates with the vehicle. Although it's not common, regular transponder chips can go bad, usually due to physical damage.

An immobilizer transceiver coil tester can be used to test the signal from the antennae at the lock cylinder.

If the ECU is determined to be bad, a used ECU with matching part numbers can be used as a replacement. Contrary to what a dealership or some shops may tell you, all that is required is an immobilizer reset service on the used, replacement, ECU to get it to function with your vehicle. A used ECU and an Immobilizer Reset Service is much cheaper than a new ECU from the dealer. Make absolutely sure that this is the problem before going this route though.

Jun 11, 2014 | 2002 Toyota Sequoia

1 Answer

I want to start the engine of Toyota innova , but the car is fitted theft deterant system immobilizer system and for that the customer in not financially sound to replace the faulty transponder system,...


It's impossible to start the engine without the transponder chip inside the key.. Only way is to buy a new same type key n virginize ur ECU n reprogram ur ECU to recognize the new key unless u still keep the original master key to activate the add key for slave key.. Look for lock smith will do the job.

Feb 01, 2013 | Toyota Cars & Trucks

1 Answer

Need schematic wiring diagram for 2002 Toyota Caldina


This is an (almost) impossible task. The immobiliser ECU which reads the key communicates with, and is controlled by, the engine ECU.
It's not possible to just "bypass" the system.
I said "almost" impossible because with the right tools, knowledge and unlimited time it may be possible to capture the code of a useable system, then design and build a black box to respond correctly to the engine ECU, which would allow engine operation.
If you have lost your only usable key, you need to order a new one (as you haven't indicated your exact model, I can't give you the correct part number - keys are different depending on model/engine).
You will also need a dealer who can programme a new key to your existing vehicle.
If your existing vehicle has problems with the immobiliser, you may be able to find a Toyota dealer to interrogate your OBD to see what the issue is. If not, replace the key transponder unit, then the ECU.
I've assumed you know it's an immobiliser issue, and that you've done the usual wiring and fuse checks etc.

Oct 27, 2012 | 2002 Toyota Caldina

2 Answers

I have to replace a ignition cylinder switch on a ford zx2 escort key is broke off in the ignition and want turn even with the other haft of the key


Sounds like you will need to replace your ignition key switch.Recommending a used one at local auto wreckers most inexpensive route to go.

Dec 19, 2010 | 2001 Ford Escort ZX2

2 Answers

Code b2799


Hello I happened to me a problem in my car check in the computer system and Dahr me On B2799 So how fittest Alco possible Chrahola Hza case and thank

Apr 28, 2010 | 2006 Toyota Camry

1 Answer

2006 dodge charger transponder key stopped working. car wont start anymore. i can open and lock the doors fine but just cant get the car to start


This means that the programming of the Transponder Key has been corrupted or the Programming data of the Key in ECU ( Electric Control Unit ) has been lost or not responding. You now have to get a new Transponder Key. You can get it on E-bay for $30. After you receive it, reprogram the car to the New Transponder Key to the ECU ( the process in usually given in the instruction manual or in the Service Manual ). Then the car will start perfectly.

Sep 26, 2009 | 2006 Dodge Charger

2 Answers

Lost my original key and need a replacement but dont want to spend $150 from a locksmith.is there any other way to get one?


$150.00 per key? may i suggest somewhere in the uk as the key replacement system is much cheaper. is it a blade style key or barrel? if blade and you cant find anyone who will do it then reply to this with email add. and i will get in touch with a few of my locals and send you details as this is around £30-£40 at the most. regards scott.

Mar 05, 2009 | 1996 Volkswagen Jetta

1 Answer

My car key


If you have a local locksmith you can trust, he should be able to get you into the car. He will need the VIN number.

Nov 21, 2008 | 2002 Toyota Sienna

1 Answer

Toyota avalon 2001 starting problem(transponder


Sure, I would sell you the same parts, IF I was interested in robbing you, BUT, I have no interest in having dissatisfied customers...So, here is what I need you to do: Call this number: 1-877-517-LOCK
This is my local locksmith,and he is cool...Tell them that I gave you this number. He has a machine, on his truck, that will reprogram your key to match the ECU/barrel combo in your car. Now, I do not expect you to have him come to your location, but, he may give you the info that HE has, his machine, and then you could call local locksmiths to see if they have the same gizmo that he has, to solve your problem. Secondly, there is an ECU exchange program from Toyota, that your dealer ssomehow neglected to tell you about, but it would cost you about 700.00 to get you going. Call the locksmiths first, and get back to me if my guy won't help you. This is the best that I can do, up to this point. Hope this helps. Advise of what transpires.

Oct 17, 2008 | 2001 Toyota Avalon

Not finding what you are looking for?
2001 Toyota Avalon Logo

565 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...