Dead battery. Replaced with new. Now won't start

[bhennrich]

I think you need to re-pair your EWS module to the DME


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[jagarundi]

Originally Posted by bhennrich

I think you need to re-pair your EWS module to the DME


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I assume that's a dealership thing?

[bhennrich]

Originally Posted by jagarundi

I assume that's a dealership thing?

Wait for some more people to chime in before you tow it to the dealer. I know there is software I have used to re-align the EWS system in my E36. So there must be some for the E53. I just have never needed it so I have not looked around the web for it. The one I used on my E36 I believe was called "EWSSync.exe" I just used a basic usb to obdII cable to the 20 pin adapter.

[upallnight]

Originally Posted by bhennrich

Wait for some more people to chime in before you tow it to the dealer. I know there is software I have used to re-align the EWS system in my E36. So there must be some for the E53. I just have never needed it so I have not looked around the web for it. The one I used on my E36 I believe was called "EWSSync.exe" I just used a basic usb to obdII cable to the 20 pin adapter.

Carsoft 6.5 had the ability to realign the EWS with the DME. I used Carsoft 6.5 when I had an E34 Touring (don't call it a station wagon).

[ogada]

Sounds more like you have problem with EWS module recognising key (transponder chip) if the other key did the same previously. With proper diagnostics you can check from EWS module what things (if any) are preventing starter activation.


also do check best deep cycle battery for best deep cycle batteries options.

[Clavurion]

Originally Posted by bhennrich

I think you need to re-pair your EWS module to the DME

If EWS-DME sync is lost the engine will crank but fuel injection is not allowed.

Sounds more like you have problem with EWS module recognising key (transponder chip) if the other key did the same previously. With proper diagnostics you can check from EWS module what things (if any) are preventing starter activation.

[lo_jack]

Originally Posted by Clavurion

If EWS-DME sync is lost the engine will crank but fuel injection is not allowed.

Sounds more like you have problem with EWS module recognising key (transponder chip) if the other key did the same previously. With proper diagnostics you can check from EWS module what things (if any) are preventing starter activation.

How does it 'not allow' fuel injection, specifically? Will it not power on the pump?


If BST fails, does it also not power the fuel pump?

[Clavurion]

Originally Posted by lo_jack

How does it 'not allow' fuel injection, specifically? Will it not power on the pump?

If BST fails, does it also not power the fuel pump?

Engine ECU won't activate fuel injectors. On diesel engines it will also prevent rail pressure rise by keeping fuel volume control closed and rail pressure regulator open.

Cable from BST powers only starter motor and alternator (and engine bay jump start connector) so if BST is open engine could work normally if you just get the engine turning (for example by towing or hill start with manual gearbox) as long as battery voltage stays high enough.