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-   -   Interesting cranking/ignition feature… (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/114384-interesting-cranking-ignition-feature.html)

E53Envyy 05-10-2022 02:05 PM

Interesting cranking/ignition feature…
 
Kinda a random post,

For the last year I would start the E53 the same way as my E46 where I’d toggle the key on until it fires up. The other day I noticed the X5 will continue to crank and start if I briefly toggle the key to the start position. Is my X5 possessed or is this a feature? I assume it’s a feature but I’ve never seen a reference to it. Can someone confirm their X5 has the same feature?

As I said, kinda a odd post.

Cheers, E53Envyy

Clavurion 05-10-2022 02:12 PM

It's a feature called convenient/automatic start on these V8 engines. Ignition switch activates a separate starter relay which stays activated until the engine starts.

X5chemist 05-10-2022 02:40 PM

Tip start. Most new cars have them. Nice to see it being used so far back. Would be nice if 3.0i had it too.

Lowblock 05-10-2022 02:50 PM

Quote:

Originally Posted by X5chemist (Post 1220460)
Nice to see it being used so far back.


My 1995 750 has this
neither one of my 3 series have it, nor does my 5 series touring, but both my x5's my 540 and 750 do.

Clavurion 05-10-2022 03:03 PM

This feature is tied to engine control unit version, not the chassis. 4 or 6 pot engines don't have this option.

E53Envyy 05-10-2022 03:04 PM

Quote:

Originally Posted by Clavurion (Post 1220459)
It's a feature called convenient/automatic start on these V8 engines. Ignition switch activates a separate starter relay which stays activated until the engine starts.

Ahh, thanks! Sounds like newer BMWs with push-to-start use very similar technology.

I remember a thread over on e46fanatics where someone retrofit push-to-start but never elaborated on how they did it. Maybe it’s not so difficult with the right EWS module and coding. Edit: and the relay as well

Clavurion 05-10-2022 03:08 PM

This feature has nothing to do with EWS module. It works the same regardless of convenient start.

E53Envyy 05-10-2022 07:44 PM

Quote:

Originally Posted by Clavurion (Post 1220464)
This feature has nothing to do with EWS module. It works the same regardless of convenient start.

Yeah I understand, when I was referring to the EWS needing adjustments that would be for push-to-start when the key is in your pocket.

andrewwynn 05-10-2022 07:56 PM

The push to start models the convenience start is still an option it's just on by default.


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