The remote locking/unlocking on my S70 has lost its range. I've changed the batteries in the remote control fobs which has made no difference. I still have to be virtually touching the windscreen to get the system to work, but then it does work.
I've had the top off the dashboard and checked the remote sensor on top of the speedo but it's like looking at inside of a transistor radio with nothing obviously broken, dirty or loose!
What goes wrong with these things?
Can it be fixed?
I took my car to the dealers yesterday to have the fault codes read to try to find out what the problem is but no fault was shown except a flat battery in the alarm siren which I believe is a separate system. So I still don't know why my remote range is so poor.
Anyway the LED light on the dash is now flashing like mad when the ignition is turned on indicating an alarm fault so I suspect the siren battery is causing that. Furthermore I can't set the alarm off on purpose now either.
So:
Could the flat battery in the siren be causing the poor range of the remote locking?
Can the siren battery be replaced or do I have to replace the whole siren unit?
This is under the nearside wheelarch cover I believe. What sort of job is it to to get at the siren if I try to do it myself?
Sorry it's such a long one, so thanks in advance.