Volvo Repair: hard strating engine, volvo s80, starter solenoid

Question
QUESTION: I have a Volvo S80 2001 model. When I do not use the car for a day for sure
the following day the engine will not start specially if the tachometer needle
jumps up & down and a message will appear saying EL power system service
required. But once the engine run and if I use the car the whole day the hard
starting trouble is gone. It seems that the engine wants that I run it often as
possible. I brought my car to the volvo dealership here in the Philippines & at
first they told me that I need to change the starter & solenoid then a day after
they told me that I need to change the electronic control module. I told them
that once the car has been used for the day for sure it will start smoothly so I
said I think the starter and solenoid is not busted. also if the ECM is not
functioning , the engine won't run anymore. I talked with the  volvo service
manager &  I said I was not happy with their  recommendations. Can you
please help me?

ANSWER: Fransico, What normally is the problem on these is the Voltage regulator on the alternator.  There is a service bulletin on it.  It drains the battery even if the car is sitting.  you can read the number on the regulator.  If its a 229 regulator, then it needs to be replaced.  Tell the dealer about this bulletin.  Roger

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QUESTION: Roger, I'm from the Philippines and I asked the dealer here and they told me
that they do not have a service bulletin regarding this matter. I brought the
car to the dealer and they scanned the system. Is it okay is I send to you the
computer copy of what they found? I have been using the car everyday and it
starts and run well. Today, I did not use it for more than 12 hour and when I
turn on the ignition switch the tachometer needle went  to 800rpm, EL power
system service message appeared again and it took me 2 tries before it
started.  It did not run smooth before it run.  Thank you, Francisco

Answer
Francisco, A scan of the system isnt going to do anything in this case.  Its just knowledge of these cars.  It may also be a simple battery problem but in my experience, I have seen the Voltage regulators with the 229 numbers being the problem.  Is there any other Volvo Shops around you?  Roger