How do i switch off STANDBY or AUTO OFF to make the iron heat up again?

you sure on the model number as it is not in
http://www.sav.rowentausa.com/Pages/instructions.aspx
suggest re checking the reference number as shown on the web page at rowenta it may be different and searching for it in the web page as I am having hard time finding anything for DW1040

depends on how old it is, try to rinse it with a water and vinegar solution, this might help

try it in another power point , otherwise have it repaired at a service center . not suitable for home repair.

I don't have a manual but these are extremely simple to use once and there is a demo on youtube for business shirts How to use Elna Press for Ironing Shirt and other videos from same member show sheets and jeans. Technique is simple, place part of garment onto the board with the rest sitting on your knees (use press sitting down in front of it) to take the weight, lower press closed with your left hand, then bring the spring loaded right handle down to apply the pressure, this has a big spring behind it and applies pressure, wait 2-3 seconds then lift right handle to release the pressure and then using your left hand grip the whole press will want to open up again. That's it! Set the temperature setting on the press and iron from your lowest temperature items first, nylons, up to cottons, linens on the hottest setting last as it will take 5 minutes or so to come up to full temperature. If you have the vapojet spray attachement, then you fill this with tap water and slide it onto the handle, give it a spray with the press open before you close to press and it turns to steam. Cleaning the top hot plate can be done with a special cleaning stick product you can buy (or any similar iron cleaning stick will work too, but you need to apply it to a hot plate so be really careful as you do this, then wipe it off with some waste fabric. Great press to own and perfect for applying interfacing if you are a sewist, (just use a piece of waste fabric so side of the interfacing doesn't attach to the top plate or your bottom cover).

Tap water contains minerals/chemicals, whether it's from a well, or from a city source. When water is heated to steaming, these minerals, precipitate out of the water and form deposits. Use some vinegar. The mild acid will help loosen the deposits... and from now on use distilled water.

Have you tried a descale ?

I thought my old one was faulty so I bought a new one and still experience the same wrinkling problem!

I never saw an iron with a retractable cord . The cover would have to be large enough to accomodate the cord and the heat from the iron could melt the cord. Are you sure it supposed to work like that?

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

All parts and service manuals can be obtained by calling the Panasonic National Parts Center directly at 1-800-332-5368 9am-8pm EST during weekdays.