Subaru Forester Manuals 2018 Forester Owner's Manual | Page 504

8-22 Driving tips/Trailer towing the rear axle of the towing vehicle. This may cause the rear wheels to skid, especially during braking or when vehicle speed is reduced dur- ing cornering, resulting in over- steer, spin out and/or jackknifing. & Trailer hitches WARNING Never drill the frame or under-body of your vehicle to install a commer- cial trailer hitch. If you do, danger- ous exhaust gas, water or mud may enter the passenger compartment through the drilled hole. Exhaust gas contains carbon monoxide, a colorless and odorless gas which is dangerous, or even lethal, if inhaled. Also, drilling the frame or under- body of your vehicle could cause deterioration of strength of your vehicle and cause corrosion around the drilled hole. CAUTION . Do not modify the vehicle ex- haust system, brake system, or other systems when installing a hitch