Hi all am after some advice my x5 has been playing up had it read and have loads off codes coming up for lots off things I have been told if I replace my alternator it will solve them all, I have attached the report for my car, any and all advice on this would be very grateful for thank you

rac codes.docx

Morning Heather

Welcome to the Forum

First thing to check/get checked is the battery, the X5 is a very power hungry car drawing huge amperages at start when the car is waking up (systems loading) and the starter turning. So first charge the battery a fully charged battery should show 12.8 volts at the charge points under the bonnet. With the engine running the voltage should be 14.8 volts checked at the same place.  A competent garage or auto electrician will be able to do that if you can't yourself. 

So if your battery has been on charge overnight and is reading less than 12.8v I would suspect the battery is dying. If the engine is running but you are seeing below 14.5 14.8v suspect the alternator. Again not necessarily the alternator it could be a failed/failing voltage regulator on the alternator and Auto Electrician should be able to check/change the alternator.

Take a look at www.realoem.com put the last 7 digits of your Vin number into the search box or search manually look at the alternator (Engine Electrical System) and you should see part numbers 

If you Google BMW Specialists you should find one near you who can help if you don't have a trusted local garage.

Good Luck

Dave

 

Morning we have check the battery its good, going to get the alternator tested later on today thank you

When the alternator is checked remember and alternator will be around £200 a Regulator should be about £30 

Good luck

Dave

P.S.After the work is done lLeave the battery disconnected for 1/2hr minimum and your codes should be reset