Not really but goe carefully. If you have airbags then you MUST disconnect
that battery and let the car rest for 15 to 20 mins. You should really
discon the battery anyway but with airbags it is a MUST!
The reason for this is that the airbag ECU is aways powered. The bags WONT
go off but if you then start dieconnecting the cables to the instrument
panel to remove or get better access to the bulb in question then the airbag
ECU will dectect a missing airbag warning light and log a fault and leave
the airbag light on when you connect everything else back up. The dealer is
really obliged, because this is a safety system, to do a full airbag
diagnostic sequence check and this can
take up to 45 mins to do. Gets expensive!
The 15 to 20 min standing time is to allow the ECU to fully self discharge,
otherwise there may be enough residual energy left by the time you start
pulling the cables.
I made this mistake on our Coupe. I rummaged around the dash working out
how to remove it. Took most of the screws
out (possibly all I can't remember, was a few years ago now). Disconnectted
the battery and had the panel out 5 mins later. Not enough time for the
airbag ECU to discharge. Then had and 80 min round trip to the dealer plus
their time to get the ECU reset and enabled again.
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