Brent cross TESLA pick up is on overflow car park next the shopping centre. If you get off at Hendon Central Tub station it's more like 15 mins walk (not 5 unless you sprint). Otherwise you can get off at Brent Cross tub station which is slightly closer than Hendon Central. You could get w bus to the shopping centre so short walk to the Tesla pick up car park but much more easier to get a tube and walk. You could also get an uber from either station that will set you £5-6 probably. I would not bother with West Hendon - it's even further to walk.
Respectfully, I have walked from Hendon Tube to Brent Cross shopping centre dozens of times, its was my normal short walk exercise routine and it is literally 5min but 15 and 5 make little difference they are both short. It is simpler than Brent Cross Tube Station which requires cross the Hendon Way flyover underpass which isn't terribly a safe passing area. My humble opinion of course