CODE: TACHO... What's this all about?

I have a '90 750iL, and on the display just below the speedometer and other gauges, "CODE: TACHO" came up, and when pushing the button to read the next message it says, "code: miles/km". Obviously tachometer... right? BUT, what about it? There doesn't seem to be a problem with the gauges, maybe an electrical problem? Couldn't find a darn thing about that code in the Bentley book. While leaving for work this morining the " ||| ASC ||| " came up when there was no possibility the ASC actually kicked in. I couldnt have been going more than 10 MPH while leaving a parking lot, which is why I wonder if it's an electrical problem and there's nothing really wrong. This car has been giving me trouble, although I still love it. I have a feeling you all will be telling me what everyone else says... SELL IT FAST! (If only someone would buy it.)

No, it's not a tachometer problem, it's a secret message from the CIA agent code-named TACHO for you to meet him code (meaning the usual number) of miles/km (depending on your current place of assignment) from your previous rendezvous point. Probably they suspect that the previous agent, JACKO, will be out of circulation soon.

TRANSLATION: I haven't got the slightest idea what those messages mean either but let me take a WAG at it.

The On Board Computer (OBC) uses various sensors to compute all of that good stuff (and other semi-useless data). I'm thinking one of the car's sensors might be bad. Study the Bentley's OBC section and look to see what sensor information comes in and maybe there'll be a clue there.

Since you seem to have electrical problems you might try the "reset fix", which is to disconnect the battery for a few minutes. Make sure you know the radio code before starting.

You may find more help at www.roadfly.org as well. Good luck.