warming battery with keyless ignition

[M1ck3y]

33 minutes ago, redwngr said:

@dabunny

 

Ignore the haters.

 

 

Most every manufacturer is using the wide open throttle (WOT) while cranking thing for clearing floods. 

 

If neither brake or throttle are pressed -- and button held for 10 seconds -- idt will go into an 'accessory mode' which is sometimes desired for troubeshooting without the engine running. 

 

 

And while were at it, when starting, with foot on brake, it is not necessary to hold the button to start -- only a quick 'press and release' is necessary. n

 

 

Button (with foot on brake) does the same thing as using the fob.

Either one sends a 'request to start' signal to the BCM. 

ECM and BCM to whatever checks they do, and when they decide everything is good - (including finishing  the glow plugs on the diesels if necessary) -- they send the crank command. 

 

Releasing the button (or key in vehicles so equipped) does not cancel the request.

 

 

Been 'bump' starting our GMs for many many years.

 

 

 

 

I'm not sure who you think is hating?

 

But everything you just said, very clearly describes why and how key cycling/battery warming doesn't work on new vehicles 

[redwngr]

46 minutes ago, M1ck3y said:

 

I'm not sure who you think is hating?

 

But everything you just said, very clearly describes why and how key cycling/battery warming doesn't work on new vehicles 

Sure it works.

10 seconds with nor pedals pushed and it's in accessory mode - and computers fire up, fans and radio etc can be operated to put load on battery beyond the normal parasitic draw they have when 'off'.  Just like when a keyed vehicle is turned to 'on' but not started.

[shakenfake]

Redwngr is right. It sounds like some of you boys need to step into a truck that has push to start.