Questions tagged [immobilizer]

A vehicle anti-theft system that inhibits engine run unless certain requirements are met before a start attempt. The most common is an RFID chip in the ignition key.

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1answer
26 views

Yamaha FZ6 S2 - dead after key duplication

I've only had my used 08 bike for a week - first bike. It came with only a master key which I used to ride 2 days ago and I left the ignition in lock position. Today I had a copy made in the local ...
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0answers
8 views

Jeep cherokee 2004 crd sport Immobilizer relay

i have a Jeep cherokee 2004 crd sport... I am looking for Immobilizer relay part number and position. It seems near impossible to find the info, there not even a 2004 haynes manual regards
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1answer
48 views

2007 Honda Accord: Replaced Ignition - Now car won't start

I have a 2007 Honda Accord EX-L Automatic transmission, that I got cheap as a project car. When I got it, the engine ran fine, however it was left at a rural property for about a year and some ...
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0answers
175 views

Attempted key copy leads to immobilizer activating

I attempted to get the key copy for my 2003 Honda Civic at Lowe's. They could not make a copy of it but now my car won't start due to the immobilizer being activated. Less than 15 minutes between ...
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1answer
133 views

ALL car keys have stopped working

I have a 10 year old Lexus RX400 which was working perfectly yesterday however today I can't unlock it. I've tried all 3 keys and none of them will work. The red light on the key flashes when I ...
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0answers
305 views

Immobilizer ring not detecting key chip in warm weather

I have had this peculiar problem since buying my Renault Master, 3 years ago. The immobilizer usually works fine however if I park the van in the hot sun, when I try to start it, I get the ...
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474 views

Central locking doesn't work, alarm goes off when getting into car, won't start

I have a Renaultsport Clio 182 which has been off the road for a while and the battery drained very low When I tried to get into the car to start it, it would not start and the alarm went off. I also ...
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1answer
251 views

Tec-tus 1 immobilizer programming

I have a tec-tus 1 immobilizer, mounted later in my Landcruiser in Germany, possibly from the last century. It has a sensor with a red LED. It reads ordinary RFID-fobs; I have actually tried putting ...
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72 views

Cable cut on immobilisers?

I have heard of the 'cable cut' principle for immobilisers but have also heard that this can be detected by car thieves with equipment. Does anyone know what this is? I am looking at this immobiliser ...
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1answer
31k views

OBD II Scanner refuses to communicate with the vehicle!

All the fuses check out All the relays check out Could I have a faulty ignition switch? Or an open somewhere? How do I go about troubleshooting this? It cycles through all the protocols, finds ...
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2answers
15k views

What does it take to program a used ECU?

I own a Mazda MPV 2000 with a faulty ECU. The vehicle has an immobilizer. It will not start with the former ECU. It floods the engine with fuel. After extensive diagnostics on the vehicle and the ...
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2answers
4k views

2003 Honda Accord Crank But no start

I did something really silly last night :( - I have a 03 Accord V6 sedan that I recently changed the transmission. After I hooked up the new tranny etc.. I noticed when I start the car the SRS, (!) ...
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2answers
1k views

How does a cobra alarm system disable starting

I have a 1998 Mazda 626 with a cobra Auto security system. I suspect some problems I have been having are related to this system and was wondering exactly how it disables starting. Specifically one ...
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3answers
1k views

Ducati Monster 821 - Ignition problems

I have a 2015-Ducati Monster 821 that have started to argue with me. When i turn the key to on - i see the panel light up and the fuel pump etc starts. But when i klick the ignition button, nothing ...
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2answers
4k views

MINI R53 won't turn over - immobiliser problem?

Mini Cooper S (2003) I've been noticing recently that it's been taking two attempts to get my car to turn over. I twist the key to the third position and nothing. I then try again and it works. This ...
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1answer
837 views

How do I reprogram an immobilizer system on a 2005 Honda Civic?

I'm currently working on an '05 Honda Civic. I replaced the steering column but now it has a different key. How do I reprogram the immobilizer system?
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1answer
256 views

Old immobiliser playing up, won't add new transponders

Is it possible that an immobilizer has malfunctioned to the point where the adding-new-fobs process doesn't work, but the actual immobilizer is still working? Or is it more likely I'm doing something ...
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2answers
3k views

Immobiliser starter relay versus fuel pump relay

I want to be be able to immobilize a vehicle. The use case is for theft prevention. All along I have been thinking in terms of disabling the starter relay, as discussed here, Current from key to ...
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1answer
5k views

Current from key to solenoid of starter motor relay

I am considering installing a starter motor immobilizing relay inline with the starter setting of the key and starter solenoid. I recently got a MAH-112-C-4 online. It has a 30A switching ...
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0answers
640 views

Volvo V40 wont start, red led light on speaker flashes rapidly

My Volvo V40 will not start. When I put the key to position 2, the red LED light on the left speaker on the dash flashes rapidly for 15 seconds. When I turn the key to position 3 the lights on the ...
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1answer
8k views

Citroen Xsara went into “Eco mode” then total blackout

I recently bought a used 2002 Citroen Xsara 2.0 Exclusive (petrol) which had a single electrical issue; the rear wiper did not stop in the "park" position but rather timed out in a random position. ...
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0answers
82 views

Ignition wire breaks while driving [closed]

I'm putting an immobilizer on the ignition circuitry. Worst case scenarios, if the immobilizer, (normally closed relay), broke what would happen? Would the car continue as normal and then not start ...
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1answer
2k views

How to add a new transponder / key to a Daihatsu immobiliser

How can I add a new key to a Daihatsu immobiliser? The key I have has a Texas 4C transponder, and is used in the Daihatsu Copen and Daihatsu YRV (to name just two).
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0answers
525 views

Renault modus 1.5 DCI imobilser will not go off

I have recently bought a 2005 Renault modus 1.5 DCI.The dash board displayed 'steering fault' which rendered power steering off. After leaving lights on over night,the battery was drained.I then ...
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1answer
622 views

Opel Frontera Electrical Problem - can't access diagnostics

I have an Opel Frontera 1999 2.2 Diesel. It refused to turn over a couple of years ago and it's taken me this long to get to doing anything about it. I was advised that it was something wrong with the ...
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5answers
8k views

How to program a transponder key of a 2000 Toyota Sienna

This is a follow-up question to my previous question regarding the replacement of the ignition switch cylinder in my car. In my 2000 Sienna there is an immobilizer circuit embedded in the switch. I ...
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3answers
20k views

Replacing the ignition switch tumbler (cylinder)

Recently we started having problems turning my 2000 Sienna's key in the switch past the OFF position. I have to wiggle the wheel for some time and play with the key, until it "catches" the right ...
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4answers
109k views

2006 Honda Civic EX - Green Key Light on dash

Problem: I try to start my car with the original factory key, as well tried with the other factory key (both have chips in them) and the car will start, run for a second then shut off. All the while ...