Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Doctor Gollum]

Seems to be pretty much the current industry standard on medium and heavy duty trucks. Even Transhits have two full batteries here. 

[Broomies Mate]

Does it have Stop/Start?

It does! And I think it's something to do with that ....

It's definitely to do with that. 

[Andy B]

Does it have Stop/Start?

It does! And I think it's something to do with that ....

It's definitely to do with that. 

but that alone or something else too? If I sit with the ignition at auxiliary with 'thing's on eg wipers, heated seats, radio, heater fan  ... are they supplied by the big starter battery under my seat or the baby battery in the back? I wouldn't imagine the baby battery would last very long. 

[Broomies Mate]

Does it have Stop/Start?

It does! And I think it's something to do with that ....

It's definitely to do with that. 

but that alone or something else too? If I sit with the ignition at auxiliary with 'thing's on eg wipers, heated seats, radio, heater fan  ... are they supplied by the big starter battery under my seat or the baby battery in the back? I wouldn't imagine the baby battery would last very long. 

All I remember on the W251, the Aux battery solely used for the S/S system.  Something in the back of my head is saying it will also allow the transmission to move from Park to Neutral in event of a main battery failure..... although that could be S-Class only. 

[Andy B]

...
 Something in the back of my head is saying it will also allow the transmission to move from Park to Neutral in event of a main battery failure.....  ...

That could be useful 

[Nick W]

...
 Something in the back of my head is saying it will also allow the transmission to move from Park to Neutral in event of a main battery failure.....  ...

That could be useful 

Useful seems to be against Mercedes principles; I've struggled with lots of transmissions that did all sorts of curious design decisions. The FWD autos shift back into neutral after a few seconds if the engine isn't running. I saw a number of E-class that wouldn't shift out of Park if the engine wasn't turning, which makes moving a non-runner interesting. They stopped using manual park releases nearly 20 years ago, and you can't even crawl underneath and disconnect the mechanical selector because they're all electronic.

[Doctor Gollum]

Mine still has a mechanical connection between the lever and the shift switch. It also has a cable interlock to stop the lever leaving park if the key is removed and the key from being removed if it isn't in park. That's obviously on top of the electrical interlock that won't release the lever if the brake pedal isn't pressed. This only works with power.

So if you don't have the key, and/or the battery is flat doing anything without a fork lift starts to look alot like work

[Andy B]

....
So if you don't have the key, and/or the battery is flat doing anything without a fork lift starts to look alot like work

I wish I'd taken more notice now, but at Mercedes, they'd just unloaded a dead car with a remote controlled vehicle lift. The driver said it was just about the only way to retrieve dead cars from multi-storey car parks where they can't get the recovery vehicle to the stranded vehicle.

[Doctor Gollum]

Judicious use of wheel dollies and a winch from some of Nick Ws recollections

[STEMO]

Mine still has a mechanical connection between the lever and the shift switch. It also has a cable interlock to stop the lever leaving park if the key is removed and the key from being removed if it isn't in park. That's obviously on top of the electrical interlock that won't release the lever if the brake pedal isn't pressed. This only works with power.

So if you don't have the key, and/or the battery is flat doing anything without a fork lift starts to look alot like work

Exactly the same as my astra.
But I think there's a release tab under the selector cover.

[Andy B]

....
So if you don't have the key, and/or the battery is flat doing anything without a fork lift starts to look alot like work

I wish I'd taken more notice now, but at Mercedes, they'd just unloaded a dead car with a remote controlled vehicle lift. The driver said it was just about the only way to retrieve dead cars from multi-storey car parks where they can't get the recovery vehicle to the stranded vehicle.

It was something like this

https://www.youtube.com/watch?v=pZDqO1l9ItQ

[Doctor Gollum]

Mine still has a mechanical connection between the lever and the shift switch. It also has a cable interlock to stop the lever leaving park if the key is removed and the key from being removed if it isn't in park. That's obviously on top of the electrical interlock that won't release the lever if the brake pedal isn't pressed. This only works with power.

So if you don't have the key, and/or the battery is flat doing anything without a fork lift starts to look alot like work

Exactly the same as my astra.
But I think there's a release tab under the selector cover.

If only

I forgot, for good measure, Mercedes saw fit to bond the selector with the key, ignition barrel and engine ecu. Which is nice. Until one of them breaks

[STEMO]

....
So if you don't have the key, and/or the battery is flat doing anything without a fork lift starts to look alot like work

I wish I'd taken more notice now, but at Mercedes, they'd just unloaded a dead car with a remote controlled vehicle lift. The driver said it was just about the only way to retrieve dead cars from multi-storey car parks where they can't get the recovery vehicle to the stranded vehicle.

It was something like this

https://www.youtube.com/watch?v=pZDqO1l9ItQ

Oh how I'd love one of those when people park all over the place here. You could hardly do it on the quiet though 

[Andy B]

....
Oh how I'd love one of those when people park all over the place here. You could hardly do it on the quiet though 

[Doctor Gollum]

Impressive