Originally Posted by musicslave
...thanks for the prompt note, sorry for any confusion. The spoiler deploys on start up if the battery is low (engine is almost a non-start). Indeed, if there is not enough charge in the battery for a start (engine barely turns over or clicking only) , I can use a second battery to junp start it. The spoiler also deploys.
Normal use maintains a good charge with no battery or spoiler issues. The symptoms occur after 7 - 10 days of non-use.
Cheers.
The spoiler deploys on startup if certain fault codes have been logged by the ECU. A low battery supply is one of those conditions. If you check for stored fault codes you will see a code stored for an under voltage condition. The spoiler will also pop up if you disconnect certain sensors too.