I take it doing the lock to lock with the steering wheel didnt erase the lights this time?

As e300d97 siad, you can access the battery voltage through the CCU control panel. Is not as acurate a reading as with a multi-meter but you can dirve around with that display showing and observe voltage which can be useful.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)