Resetting service warning lights

AH! Stop right there. I might have known you two f*****ts were working hand in glove with each other to spread disinformation here. you're both cut from the same cloth!

The LEDS on my ford switched ELM are lit all the time when it's in a Mazda 323F. A bluetooth device can connect but it can't read codes.

Leaving it in is a good way to flatten the battery. With reduced voltage the power door locks operate and make sure the battery is pancaked.

Since you want to monitor under all conditions ... no. I have driven along with my son monitoring an Android tablet alongside me.

OK!

Historically you could have done what the hell you liked until the light became a testable item some 5 years ago iirc.

The testing station I use has a number of huge posters on the wall of the testing bay, kerb weights for calculation of brake efficiency is one, and one of them covers the warning light sequences for what must be hundreds of models of car. Clearly they are not part of the MOT testing handbook but they wouldn't just have them there to make the walls look pretty.

This is the 2018 edition

Sorry I had misread that

Yes, apologies.

That could explain the brief open wifi alert I used to get on my phone a few years back when a certain car passed me in the other direction. It certainly wasn't location specific.

It was a testable item.

Testers, IME, just check to see if the light comes on and goes off.

I'd guess some may check it operates correctly. The ones who like to drum up business. Or just super keen.

Or the ones that do the job correctly. Some people do actually do a proper job.

Its fine, you aren't the only one to get it wrong, the rest will just continue to deny it.

The first post in the thread made no mention of "disable" it just said "reset" and "turn off" ....

Without bothering to fix any fault that may be there.

I wonder if you could simply rip out all the airbags and pass the MOT that way? Then the fact that the light is on would simply be reflecting the true position!

For a real oddity. A number of times sailing from Portsmouth to Caen or St. Malo or in the opposite direction, I have left my phone turned on so that I can check the time in the dark and about half way, the phone has connected to a phone network and given me the message "Welcome to Iceland." WTF?

SteveW

So if the fault still exists the warning lamp will come back on. Which proves it's a real fault and not some spurious one off triggered event from going over a pothole a bit fast last month.

Don't worry. Once we're finally out of the EU all that erroneous s**te we've hitherto had to put up with will be history.

Not if they fix it so it doesn't come on which is what the OP wanted.