The car: a ramp he has already learned to trust
Most senior dogs struggle with the car because the jump down, not up, slams ageing shoulders and elbows. Solve it with a wide ramp with a high-grip surface, long enough that the angle to your boot stays shallow — a short, steep ramp is harder than the jump for many dogs. Teach it properly: lay the ramp flat across the lawn first and walk him over it for treats until it is boring, then raise one end a few inches on a step, and only later use it at the car with the engine off. Stand beside the ramp as a bodyguard against sideways leaps, keep the lead loose, and let him set the pace. In the car, give him a non-slip mat and room to lie down, and reverse the ramp routine calmly at the far end rather than lifting a stiff dog out by hand.
Stairs: share the weight, never drag
If stairs cannot be avoided, make them grippy and shared work. Fit non-slip treads or a runner to smooth steps, light the staircase well, and use a support harness with a top handle that lets you take part of his weight through the hindquarters, where senior dogs usually lose strength. Walk beside him on his weaker side, one step at a time, pausing on landings, and go down even more slowly than up — descent loads the front end he can least afford to jar. Never pull him by the collar, scruff, or front legs, and never let children be the stair helper for a large dog. If he is small enough, carrying him correctly — one arm under the chest, one under the rear, body kept level — is safer than any stair climb.
Decide which climbs should simply stop
Helping well also means removing climbs that no longer earn their risk. If he only goes upstairs to sleep with you, weigh a good bed downstairs, a stair gate, and your company in the evening downstairs against a nightly struggle that will eventually end in a fall. Block access when you are out, because a dog who manages stairs with your support may attempt them alone and get stranded or fall. Keep everything he needs — bed, water, food, garden access — on one level, and treat any remaining essential steps, such as the back door, with a fixed ramp or a shallow built step and a handrail-height mindset: slow, lit, grippy, supervised.
When struggling means more than old age
Some stair and car trouble is a veterinary matter, not an equipment matter. Book an appointment if the difficulty arrived suddenly, if he cries out, knuckles or drags his back feet, crosses his hind legs, cannot rise at all one morning, or loses bladder control on the stairs — those signs point beyond ordinary stiffness and need examination. A gradual change that tracks with cold weather and improves as he warms up is the pattern to discuss at his next senior review, with your notes on when it started and what now defeats him. Agree one household method so he is never handled three different ways. For the family side of that method, Family Sharing on KinsLe lets relatives you pick open his profile, connecting the people who lift and guide him to the senior dog's own profile.