2015 Subaru Forester Pricing and Specs

Without being able to scan the car from here, this sounds like a classic case of a body computer that is suffering a slow death. This computer is the one that links all the car’s major functions, including those ones you’ve listed as being on the blink. Random failures of these systems all at once point to the computer itself rather than the systems themselves.

Hooking the car up to a scanner at a workshop will tell you a lot more about what’s going on as the mechanic should be able to read the fault codes and make a diagnosis from there. The alternative cause is a poor earth somewhere in the car or a dodgy battery that is playing hell with the computer’s power source. Modern cars will not tolerate a poor power supply or earthing problems.

To start you need to have the filter cleaned out by what it called a manual regeneration. It’s not a warranty issue. Take it to a Subaru dealer and get a quote from them. The reason the light has come on is that the car hasn’t been driven in a way that ensures the regeneration takes place automatically. It could be because of the way you drive it, or the way previous owners have driven it. When you talk to the Subaru dealer about regenerating the filter also ask about the way to drive it so the regeneration happens automatically.

There are no hard and fast rules for how fast you should drive when towing, but many companies recommend driving at a lower speed when towing. Subaru say you should not drive its vehicles, including the Forester, at speeds in excess of 80 km/h when towing. It's done for safety.