NEED TO KNOW IF 2003 BMW 325I HAS A RADIO CODE AFTER BATTERY HAS BEEN DISCONNECTED

No lights, nothing? Not anti-theft, that only stops you starting the engine. Check the big fuse on the battery.

https://www.e90post.com/forums/showthread.php?t=1455825

Could be battery be flat?

https://www.google.com/search?q=2003+bmw+325i+battery+reset

Ultimately, it is a BMW, so you will probably have to get the dealership to tow it, unless it is a simple flat battery. So many FUSES!

https://fuse-box.info/bmw/bmw-3-series-e46-1998-2006-fuses-and-relay

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Sounds like you have a dead battery. Try recharging the battery or get someone with jumper cables to give you a jump. If your battery dies again after driving for at least an hour you likely need a new battery. If the battery in the car is the original, it's time to replace it anyway.

remove the battery cables and touch them together to remove residual voltage leave disconnected for 1 hour then reconnect and read codes in computer

hi, you have two options. you can disconnect the negtaive lead on the battery and then hold down the brake pedal for 3-5 seconds. this will reset the ecu and and stop the problem..

or if you open the hood and look in the engine compartment on the left hand side you will see a small retangular fuse box. if you open up your bmw owners manual it will list each fuse and its circuit. take the small green clips and pull the fuse marked exterior auxiliary lights.

this will keeep you from ahving to reset your radio code and having to re-teach the ecu your driving habits etc.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_cd01d4e4178e5a11

TURN OFF RADIO FIRST BEFORE DISCONNECTING THE NEGATIVE BATTERY CABLE BUT.THATS NO GUARANTEE YOU WILL LOSE RADIO CODE I WOULD TRY TO USE A BACK UP MEMORY SAVER YOU PLUG IN THE CIGARETTE LIGHTER BUT NO GOOD IF CAR GOING TO BE DOWN LONG.TIME BECAUSE THE MEMORY SAVER BATTERY WILL GET WEAK YOURE IN TROUBLE.BMW WARNS IF YOU DISCONNECT BATTERY CABLES YOU WOULD LOSE HEATING COOLING CLIMATE CONTROL.YOU ALSO WILL LOSE FUNCTION TO WINDSHIELD WIPERS AND WASHER , CENTRAL LOCKING AND THEFT SYSTEM CONTROL.

contact bmw dealer , give them vin #

If it makes no noise when you try to start it but the lights, radio, etc. all work, replace the starter.

Go to an auto parts store and get a Haynes repair manual for your vehicle and look up disassembly of the dash board area. That will be the best solution to getting that radio out.

Hi!
You don't need to take the vehicle to the dealership, just the vin number registration document/title proof of ownership and identification. They should be only too glad to give you the code for a small fee I guess.
Hope this sorts it? Please press the Blue Button for My FREE! advice. Thank You!
Paul 'W' U.K.

The only way to obtain a code is to call BMW with the serial number which is located on a stick at the back of the radio