I have an intermittent Charge indicator light on my 2007 3.0i. I'm assuming my alternator is on its way out,.....but before I order a new one,....(I will be checking the actual charge rate with a multimeter), I thought I should check in here to see if the Z4 has some quirky issue other than a failing alternator that causes the charge indicator light to come on and off,....intermittently.
intermittent Charge indicator light
- Thread starter bcolins
- Start date
raymond.harper
Senior member
My 2.5 2003 had this problem. I used to carry around a volt meter to test when the light came on but never found anything wrong with the voltage. I also ran a scan but no abnormal readings were found. However, changed the battery and the light did not come back on
You can measure the voltage. ~14V is what it should be. Any less than 13,6V is already weak. It should also not get too high.
There are usually 2 things that can fail in an alternator: regulator and brushes. With worn brushes it will die like any electric motor. If a regulator fails, there will be voltage changing up an down instead of being steady. Or it also just dies.
There are usually 2 things that can fail in an alternator: regulator and brushes. With worn brushes it will die like any electric motor. If a regulator fails, there will be voltage changing up an down instead of being steady. Or it also just dies.
Regulator pack is a cheap first attempt at a fix, not sure if you can do it in situ.
If you have the N52 engine the alternator bolts need to be replaced every time they are released (aluminum stretch bolts).
If you have the N52 engine the alternator bolts need to be replaced every time they are released (aluminum stretch bolts).
