Alfa Romeo Giulia Forum banner
21 - 40 of 92 Posts
Uhm... save a few drops of gasoline or potentially kill yourself in a crash? decisions decisions.... >:)

I'll take my chances. I've seen several people over the years in major crashes that couldn't get out of a crashed car because of a seatbelt. I don't mind paying $25 non moving violation tickets for seatbelt violations. For the record I've never gotten a seat belt ticket.
 
Not so sure about this.....

I'll take my chances. I've seen several people over the years in major crashes that couldn't get out of a crashed car because of a seatbelt. I don't mind paying $25 non moving violation tickets for seatbelt violations. For the record I've never gotten a seat belt ticket.
Just to be clear...In a crash, a seat belt can only save your life. Having done a Hospital based Dental residency at the largest city hospital in New York (Brooklyn's Kings County Hospital) I can't tell you the number of times I was summoned to the ER to suture the face of a motor vehicle accident victim that was not wearing a seat belt and was ejected from the car through the windshield....These people suffer horrific injuries and frequently head trauma leading to death....If you're worried about your seat belt "trapping" you, every EMT carries scissors on them and it is very simple for you to put a scissor in your driver's side door map pocket in the event that you need to "cut your way out"....Trust me, a seat belt can only save your life....
 
I'll take my chances. I've seen several people over the years in major crashes that couldn't get out of a crashed car because of a seatbelt. I don't mind paying $25 non moving violation tickets for seatbelt violations. For the record I've never gotten a seat belt ticket.
How many people have you heard of that survive getting ejected in a crash?
 
Need to use data, not anecdotes. The data on seatbelts saving lives is overwhelming.


There have been isolated cases of pilots jumping of a plane in distress who were killed by being strangled by the parachute. Still, the odds of surviving are much greater if you jump of a plane with a parachute than without one.


Should not make decisions based on individual cases or anecdotes. Need data (science) and statistics.
 
you might as well push the on/off button at the start of a trip .... ;)
Or cut/disconnect the wire to the switch inside of the seatbelt buckle.
Of course, then you have that chime to deal with.
 
As a safer alternative to not buckling your seat belts, you could always lower your AC to its lowest setting while keeping your windows down. Doing so will prevent the HVAC system from ever reaching the desired temperature and the system will not engage Auto Stop/Start.
 
I was chatting with @MacGeek a while ago on this subject. He suggested that perhaps a button press simulator circuit could be devised. This circuit would simulate pressing the s/s button when power is first provided to the circuit. He provided a link to a possible circuit that could be used which I'm giving below. I plan to try this when I get my car, but if there's an enterprising EE out there who wants to try first, go for it. Macgeek also provided the switch pin-out for the s/s button but now those pictures seem to have disappeared from my PM message list.
https://electronics.stackexchange.com/questions/245753/generating-a-delayed-pulse-with-one-555-timer-upon-powering-up-the-circuit
 
I ordered the part below and will try it out.
This must be what we need.
time delay timer (momentary, on/off cycle that could be set from .15 sec to many hours,...)
Will post instructions and video once I get it done.

If ever you find the pictures of the switch pin out and intructions to access the light switch in the meantime, it will be greatly appreciated.

 
I ordered the part below and will try it out.
This must be what we need.
time delay timer (momentary, on/off cycle that could be set from .15 sec to many hours,...)
Cool, that may work, but I think that the stop/start switch is a contact to ground when pressed, so the circuit would have to momentarily connect to ground and then release after power-on.
Here's a quote from @MacGeek.
It appears that pin 8 should be brought to ground to simulate a button press.
Maybe that together with a relay where the secondary relay circuit is connected pin 8 to ground. Connect the current switch in parallel to the secondary relay circuit so that either the button or the relay will make contact to ground.

Perhaps @MacGeek can post the switch pin-out here.

Looking forward to your results!
 
you could add this relay
to bring pin 8 to ground.

Hey MacGeek what if pin 8 is wired to ground or does it have to be momentary after car is booted up?
 
momentary ground out will not be an issue,
The device I ordered is an actual relay that can hold upto 5A of current.
unless there's more than just ground... CANBUS
will post results.
Has anybody removed the switch to see ?
what's the easiest way without damaging any clips?
 
Hey MacGeek what if pin 8 is wired to ground or does it have to be momentary after car is booted up?
He told me that an error light will come on if the system detects that the button is "stuck".

DTC B1083-23: STOP AND START BUTTON SWITCH STUCK - SIGNAL STUCK LOW

So it needs a single pulse. I'm not sure whether a delay is really needed or not. And you'd have to define the length of the pulse, to make sure the simulated button press is correctly interpreted as a single press.
Also, I doubt it would work to have pin 8 at +12V when the pulse is inactive. That could damage the control module. That's why I'm thinking an extra relay is needed. The output of that timer seems to be either Vcc or ground. What we want is ground or open. I did not see a mode for that in the timer instruction book.
 
He told me that an error light will come on if the system detects that the button is "stuck".



Also, I doubt it would work to have pin 8 at +12V when the pulse is inactive. That could damage the control module. That's why I'm thinking an extra relay is needed. The output of that timer seems to be either Vcc or ground. What we want is ground or open. I did not see a mode for that in the timer instruction book.
555 timers have been around since I was in school (40 years ago). The output should be used to control some sort of driver and not go directly into something that you don't know anything about. The "clean" approach is to connect 555 output to a relay driver, connect the relay driver to a small relay and then connect the relay contacts in parallel (NO switch) or series (NC switch) with the dashboard switch. Packaging the whole thing and making it not glitch upon power up may require more creativity. That is why I posted a link in that original discussion to a neat unit that already has all of the design kinks worked out. Spend $3 for a finished product that will plug in and work, or spend hours (or more) trying to figure out how to do it from scratch; its your choice.

Here is something really cheap and ready to go except for an enclosure; I have no idea if it really works:


It might require 2 of these, one to push and one to release the button.

If you can't follow the link, try searching for
Generic 12V Delay Timer Switch Adjustable Module 0 to 10 Second NE555
 
21 - 40 of 92 Posts