Suzuki SX4 Immobilizer Issue

[Soh]

Dear All,

I'm having Suzuki SX4 2011 Japanese Model Sportsback (Not Sedan) Car.

There is an issue in this car with the Immobilizer.

When the key is turn to the ON position, the Immobilizer Bulb doesn't light up immediately. Accordingly, when the key is further turned for starting, the engine doesn't start. But after keeping the key in ON position for about 5 minutes, then light comes up. Then the engine can be started. 

If I start the engine and stop, and if I again turn the key to ON position, then the bulb comes up, and can be started. If the car is stopped for some time, then same issue comes up. (Waiting time for illuminating the immobilizer bulb is varied.)

I replaced the battery of the key, but the issue is still there.

Can someone help me in this regard?

Thanks.

[john cooper]

Is you SX4 is key less start with rotation dial or key in model?

Glad to see a SX4 Hatch in SL and hope it is AWD model. 😊

regards,

JC

[Soh]

Dear John,

Thanks for the response.

This is a Key in Model. It's having 02 Lock/Unlock Buttons, need to insert the metal key to start.

Unfortunately, it's not a AWD. 😪

Thanks.

[iRage]

Does every other option in the key work ? Like remote door locks have no issue ? 

It could be that the imobilizer transeivers itself are not working properly. 

Did you make any changes to any of the electronics in the car recently ? Install anything ? Remove anything ? 

[Soh]

Dear iRage,

Yes, Lock & Unlock functions of the Key are working properly.

Recently, the Fuel Pump and the Fuel Pump Relay were replaced. I'm not sure whether this issue came before or after that replacement.

Thanks.

[john cooper]

Is the immobilizer light always coming up after about 5min or is that time change?

 

[Soh]

Time changes lot. I measured the time with a stopwatch. Once it gave 1 min and 6 secs, and some times more than that and less than that. There is no rounded time like 1 min, 40 sec, 30 sec, etc.

Thanks.

[john cooper]

4 hours ago, Soh said:

Time changes lot. I measured the time with a stopwatch. Once it gave 1 min and 6 secs, and some times more than that and less than that. There is no rounded time like 1 min, 40 sec, 30 sec, etc.

Thanks.

may be worth check the ignition key barrel ???

regards

JC

[Soh]

Thanks for the instruction.

But, how? What do I looking for? Can I do it by myself? Or should I have to go to a mechanic?

[iRage]

It could be the barrel, it could be the transeiver in the key or the car. Unless you are mechanically and/or electronically inclined I believe it will be a bit of a difficult task for you.  At the very most you can check if all the connections from the barrel are good.

[Soh]

Thanks. If the connections having fault, how it will be OK after few time? Anyhow, I will bring it to the Suzuki Dealer.

Thanks.

[john cooper]

On 7/13/2021 at 8:10 PM, Soh said:

Thanks for the instruction.

But, how? What do I looking for? Can I do it by myself? Or should I have to go to a mechanic?

I don't think the visible inspection is possible to check the key barrel, may be once the key in the on position, try move the key up and down and try pull out and put back in (Make sure to NOT to use lot of force) See if you see any different in the time with the immobilizer light.

If the time changes when you try multiple times then most likely the key barrel. Your decision to consult the dealers would be the correct decision.  

regards,

JC

[Soh]

Thanks John,

Yes, Let's see the response of the dealer.

But, till that, can someone say that will there be an issue on ECM or ICM?

Or, should I reprogram the Key Transponder? Is there a way to do that?

I did the instructions given here, but didn't work.

https://itstillruns.com/reprogram-transponder-key-7602240.html

Any other way for it?

Thanks.

[Artemax]

Hi Soh,

Did you finally resolve your immobilizer issue? I am having the same exact problem as yours, mine is suzuki sx4 2009 sedan. Will be great if you can share ...