My SRS light came on this morning. It has come on before but gone out. just wondering if anyone knows what this means and how to fix it?

 

What year is your truck? The SRS air bags are rated for changing after 10 years (but that is probably a*s covering BS by LR) but the system may generate a light to say the date has passed, not that mine ever has.

I wonder how many people have ever changed their air bags after 10 years?

 

Never changed them unless they deploy. And never on lr. My light in disco came on a couple of times. I chased cause to a lose fuse or relay (can't remember) off ever since

 

Need to read the codes to be sure, unless you have other symptoms. On my 96, the SRS light came on, then later the horn stopped working, so I guessed on cable real, and that fixed my problem.

Some codes won't reset on their own, so you might need access to a code reader anyway, to clear them.

 

look under your seat at a yellow (I think) SRS Plug, People can kick it with there feet and cargo can slide around and disconnect them, also they can corrode a little, so check for that also. It's happened to me.

 

Yep, that works well Dusty. Did you just pull the fuse or relay?.

 

There is no internal clock in the ABS module (or any module, as it would require its' own power source that would last at least 10 years and continue to count even with vehicle battery removed) - thus no way for it to really know what "10 years" is.

As others mentioned in the thread you're most likely referencing from the other day, this is usually simply a liability reason. The manufacturer can't "guarantee" that the bags will deploy after a certain amount of time, and thus aren't liable anymore. For all we know you go from a 99% deployment success rate to a 95% success rate or something - but it's most likely a non-issue.

My disco is 15 years old and has never had an SRS light on *knocks on wood*.

To answer the OP's question, it means there's a fault and you most likely need a code reader to diagnose and/or to at least reset the light, as others have said there are many SRS codes that won't reset on their own unfortunately.

FWIW there are many sensors in the front seat area, from various weight sensors to seat belt sensors - I'd check those first, as I've had both fail on a 97 M3 before.

Just remember, depending on the fault, it's possible that you can fix the problem and still have the light on, leading you to think it wasn't the actual problem.

 

You are probably right EstorilM. I'm by no means clued up on electronics but I considered the SRS ECU may have a time related alarm set into it. I suppose it's like food 'sell by dates' it doesn't go bad immediately the date is up and I would guess the SRS will deploy OK even after 15 or 20 years but LR have got themselves off the hook should it fail.

 

Yeah understood, but from what I know about computers/electronics I'm unable to think of any way for them to track "time" in the ecu since there's way for it to have a constant power source (think resetting your radio or clock on the console after disconnecting the battery.)

It stores all the programming in memory sure, but a clock still needs to "count" even after power is removed. If you drove it off the showroom, unhooked the battery, waited 10 years and reconnected it, the SRS ECU would think it was a new car still (even though the airbags may be expired).

I'd be willing to bet that there's zero way an SRS fault light can be triggered by time delay/expiration, but I've definitely been wrong before. Of course then again if this was the case, my DII SRS light should have come on 5 years ago.