2003 x5 cranks but wont start after batter change

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: bmw x5 doesn't start, all the lights turn on but no crank?

YOUR EWS CONTOL UNIT IS FAULTY TAKE YOUR VEHICLE TO YOUR DEALER WITH YOUR REGISTRATION PAPERS AND A NEW UNIT WILL BE INSTALLED.
AFTER THE VEHICLE STARTS AND YOU WAIT 10 TO 15 SEC THE MEMORY ON THE KEY WILL BE LOST.. DIGNOSITICS WILL DETERMINE WEATHER THE TRANSPONDER RING OR KEY IS FAULTY AND THE RELAY IN THE CONTROL MIT BE FAULTY MEANING THE UNIT WILL HAVE TO CHANGED.

SOURCE: how to replace turn light on bmw x5

partially remove the desired light by remove the 4 8mm screws, two ont the top and two at bottom behing the light, pull the light out far enough that you can see the socket,you should be able to remove it at that point.You should also check the contact of the bulb as it is most likely burned or melting and has damaged the socket so you should replace he socket and bulb as the warning may still be present even though the bulb works.Also the rear tail lights have a corrosion and burning issue as well on the brake contacts.

ZappaNut

• 960 Answers
• Posted on Sep 28, 2010

SOURCE: BMW X5 will not start. It started this morning

are there any codes comming from the computor ?

SOURCE: bmw 530d e39 2002 car

Most probably its a low fuel pressure related problem.Get the fuel pressure checked.If its low then this is faulty fuel pump and clogged fuel filter issue.the other possibilities are,-----

A car that cranks over but doesn't start, in many cases will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also this problems are related to faulty spark plug. Check the spark at spark plugs when you start the car. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt.If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced.If all the possible options checked out ok then check the car starter. The starter gets power from battery to start the care. If the starter is faulty then it will not let the car to start. Also check and confirm that there is fuel in the car. If it very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the car. If the car starts momentarily, then there's a good chance the fuel pump is not working or the car is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gage and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem.Thanks.Helpmech.