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Car Forum / Saab Cars / November 2007

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Key Remote, Theft Alarm, and Starting Issues --Are they all connected?

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Amanda - 14 Nov 2007 18:28 GMT
Hi All,

Question...  I purchased a 2001 Saab 9-5 in September, and the car's
computer indicated that the key battery needed to be changed, which I
did right away, but within weeks it was indicating that it should be
replaced --AGAIN!  I read in Saab's manual that a battery should last
for 4-5 years, and I checked the battery with a voltage meter and it
was fully charged.  Also, a few weeks back the theft alarm set itself
off several times in one night --I was parked out in the middle of
nowhere, and nothing could have set it off.  Since then the car's
computer has said to Service Theft Alarm.  And, the most annoying
recurring problem is the car not starting.  It is not the battery, as
all the panel lights and stereo turn on, but I turn the key and
nothing happens.  This only happens intermittently.  I am wondering if
it may need a new starter, or if it could be the car's computer
system, and all of these problems are related?  I'm hoping someone out
there might have an idea of what's going on before I spend a lot of
'exploratory' money seeking the answer myself!

Thanks much!
Amanda
th - 17 Nov 2007 00:02 GMT
> Hi All,
>
[quoted text clipped - 17 lines]
> Thanks much!
> Amanda

It could actually be the car battery. Even if the battery is bad the
radio and panel lights will function. If not changed, the car battery is
now six years old and is probably degraded. Use the voltmeter to check
the battery voltage with the ignition off, with the ignition on, when
starting and when running and you will get a good idea about its
condition. I noticed that a low battery voltage made it impossible to
lock the car using the remote, but the remote unlock still worked also
after locking the driver door manually.

Signature

th


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