S Series Question

My malfunction indicator is showing " pre-save inactive" and the engine icon is lite up, it also says to take it to a workshop. I don't think the car is
changing gears properly but I can't find any info on the net. Can anyone please tell me what this message means and is there anything I should know before I take it to the workshop so that I don't get ripped off too much. Thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.