Mk4 2021 Jazz Brake failure

[ColinB]

You need to have or create a Honda account.

I find it quite strange how Honda sees fit to inflict different rules on its customers!

In Switzerland https://www.de.honda.ch/services/dsr works completely free from any account (I do not know quite yet if this actually is an advantage as the VIN is visible for anyone getting close enough to the vehicule).

So any random person can read the car's VIN and find out it's service history? I suspect this is a difference between Swiss and UK data protection laws. No idea what the Swiss equivalent of GDPR is, but in UK I suspect that detailed data about a car's history might be regarded as needing password-protection via an account because it's conceivable that it contains personally-identifiable information.

[coldstart]

So any random person can read the car's VIN and find out it's service history?

I'm afraid, that is the consequence, yes!  (and I do wholeheartedly concur with your estimate of Swiss data "protection")

(by my opinion the clearly visible VIN itself is in violation of "my" idea of privacy!)