WARNING
For items (a) through (c), always follow the specifications listed on the tire inflation pressure label located on the driver’s door pillar.
If these requirements are not met, the Subaru Ascent drivetrain may suffer serious damage, and the following aspects may be negatively affected.
Failure to maintain uniform tire specifications can also compromise safety and increase the risk of losing control of your Subaru Ascent.
CAUTION
If you must use a temporary spare tire on your Subaru Ascent, always use the original spare provided with the vehicle. Using a spare tire of a different size or type can cause severe damage to the AWD drivetrain system.

The Subaru Ascent All-Wheel Drive system continuously distributes engine power to all four wheels, enhancing traction and stability in challenging driving conditions such as wet, icy, or uneven surfaces. This system improves acceleration on slippery terrain and provides additional engine braking force when decelerating.
Because of these advanced characteristics, the Subaru Ascent may behave differently compared to conventional two-wheel drive vehicles. Understanding these differences is essential for safe and efficient driving.
Additional note: The Subaru Ascent AWD system is engineered to provide confidence and control across various driving conditions. However, maintaining proper tires, performing regular inspections, and adapting driving behavior to road conditions are essential to fully benefit from its capabilities and ensure long-term reliability.
Periodic inspections
On-road and off-road drivingDtc u0416 invalid data received from vehicle dynamics control module
POWER ASSISTED SYSTEM (POWER STEERING) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULENOTE:Refer to “LAN SYSTEM” for diagnostic procedure. Basic Diagnostic Procedure"> ...
Diagnostics with phenomenon Inspection
AUTO HEADLIGHT BEAM LEVELER SYSTEM (DIAGNOSTICS) > Diagnostics with PhenomenonINSPECTION1. BEAM LEVEL CONTROL DOES NOT FUNCTIONCAUTION:• Before performing diagnosis, check the fuse in this circuit.• Initialization is required after replacing the auto headlight beam leveler CM.Wiring d ...
Road test Inspection
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Road TestINSPECTION1. GENERAL PRECAUTIONRoad tests should be conducted to properly diagnose the condition of CVT.CAUTION:Always observe the local traffic laws when performing the test.2. D RANGE SHIFT FUNCTIONMake sure that the engine speed is 1,100 — ...