My 1999 bmw z3 will not start , code A9 &44 sows up air pump keeps running when ignition is on & drains the battery out?

SOURCE: Will the wheels from a BMW Z3 M fit a 1999 BMW Z3 2.8 ltr roadster?

yes they will you just may need to use a wheel spacer

SOURCE: Need location of fuel pump on a 1992 BMW 525i straight six engine

The fuel pump is located under the back seat on the passenger side. You will find an access cover and will need to remove the screws. You should be able to listen for the pump while someone cranks the car. Also I believe there is a large green w/ blue trace wire and an equally large brown wire at the connector. Check for battery voltage across the two wires. The fuse for the pump should be in the fuse panel under the hood.

SOURCE: BMW Z3 WRONG UNLOCK RADIO CODE HOW TO GET THE RIGHT ONE

If the radio is displaying code wait, or wait, then the ignition and radio must remain on for 1hour. I would contact a dealer within the USA and provide them with your radio serial number. The serial number can be displayed in the radio by pressing and holding down the "M" button while turning on the ignition.

SOURCE: 2003 BMW X5 fan runs after engine is off, drains battery

if you mean the interior fan
replace fan control resistor driver side footwell in climate housing

SOURCE: 1999 BMW Z3 radio code

I have same problem need to get the serial number off of the back of the radio and the vin# and give that info to the dealer and he will have the code. If code still does not work ask for a different code since they installed radios from different manufacturers.