BDI display not working

New to forum. Just acquired 1999 E825 4 seater. New batteries installed and waiting on battery display and charger from Gwest. Car runs great with the new batteries but the BDI only displays 0000. Don’t really care about speedometer and battery indicator because getting those with other options. I would like to see any error codes though. Any thoughts on how to get error codes if BDI not working or how to get BDI to work?

I believe only three possibilities.
Communication and power supply is direct from controller.
I have no experience with this problem. Rodney would know most likely failure.
Try carefully re-seating connectors, looking for obvious loose wires. Don’t pull on wires.
Hard reset of controller. All battery power off and on.

LX handset or Sentry sw will allow you to read and reset codes.

I had the same problem and learned from another poster on this forum how to reset the BDI. Here’s what he said (and it worked for me!):

"With brand new Deka GEL batteries installed and fully charged, I noticed the BDI was not updating (showing only single red bar). So I found the process to manually change the state of charge (see below). However, as I went through this process, I inadvertently changed the setting for ‘Batt’ instead of the ‘SOC’ as indicated below. I don’t recall what the OEM setting was for ‘batt’, so I am wondering what this setting is for and what the default is. I was thinking perhaps battery type, thinking maybe it corresponds to the battery type of the charger. I am ordering a service manual, with hopes this may be in the manual, but it will be several weeks before I get it. As a side note, the reason I am asking the question is I am noticing that the BDI does not appear to be updating as the batteries are discharged from use. I suspect its because I changed the ‘Batt’ setting that is causing this.

Process I followed:
Turn the key on.

Push and release the TRIP/ODOMETER switch until it’s showing the odometer.

While holding the switch down, turn the RIGHT signal on, then the LEFT
signal, then return the blinker to the center.

Release the TRIP/ODOMETER switch. You should be seeing data (P0105) on
the display now.

Turn the RIGHT signal on, then off repeatedly until the display reads:
SOC (State Of Charge), [then go back to neutral on signal]

Push and release the TRIP/ODOMETER switch. Now it’s remaining capacity in

You can now raise (or lower, for that matter) the SOC with the blinker
switch. [I set mine to 99% since I know the charge was full]

When you’re happy, Push and release the TRIP/ODOMETER switch. The display
reads: DONE.

Turn the key off."

1999’s don’t have the LCD display - They just have an hour meter/battery % meter.
Those instructions are good for 2004 and up.