I did challenge the service contact regarding the potential total failure of the parking brake, and he suggested to leave it in P.
Fortunately, it’s parked on the flat and I’m doing little to no miles although not happy about it. Below a extract from the manual.

Hi bud hope your well, sorry to message you about this, my v90 is 3 months out of warranty and I’ve got the parking brake temporarily unavailable and auto hold service required warning

I can still activate the parking brake manually on and off, could you do this with yours?

How much was your bill if you don’t mind me asking?

I took it Volvo today who said they need to rebook it in for a diag at £95

I’m hoping it’s a software issue due to the fact I can still use it manually

Thanks

Bud

Volvo XC90 2018 'Parking brake service required'
 

Hi All

My 2018 Volvo that was bought from a Volvo dealer less than 12 months ago came up with a message 'Parking brake service required'.

As the car was due for a service we took it in and asked them to have a look at this issue too.

The car is still under warranty - however we were told we will need to pay £170 diagnostic fee, and if the issue is covered by the warranty then this will be refunded.

We were then told the issue was a corroded parking brake wiring loom that will cost £1500 to replace, and corrosion is not covered by warranty.

Does this sound normal to you?

I have just received the option to extend my warranty at approximately £600 for another 12 months - I can't see the point!

..sadly yes. All warranties tend to have" excludes wear and tear" as weesel words so they can get out of meeting claims. I've NEVER seen an engineering failure that was not attributable to some wear/tear,even in incorrectly manufactured (design or material used) items.
I'd ask how many of your vehicle type had been returned due to this type of failure. When they proudly tell you they have never heard of this fault, suggest that volvo warrant their cars for 8 years against rust perforation, and take adequate rust proofing measures to ensure that timescale is achieved. The fact your handbrake loom failed to reach the 8 years that the rest of the car can achieve would indicate, faulty materials used, or faulty protection applied. What other reason could cause the failure?? Or are volvo so penny pinching they only protect the loom to last 3 years and its a serviceable item??? Therefore this is a genuine claim and should be sorted out at volvos cost.

Cheers Bob

As your car is a 2018 car I presume the warranty you refer to is the Volvo Extended Warranty. Like all so-called extended warranties it is actually an insurance policy, in this case provided by Car Care Plan.

Like all insurance policies it has exclusions and damage caused by corrosion is one of the exclusions.

Having said that, a wiring loom should not fail due to corrosion after four years.

I would ask for Volvo to cover the cost or to provide a contribution towards the cost - succeeding with the latter is more likely than the former.

That's not what manufacturers do, especially with electrical stuff, imagine if the temp fix caused a fire! They'll just replace.

I remember a few years back having an Audi, I read that if an LED went in the instrument binnacle then the whole binnacle needed replaced! No wonder cars are so expensive lol

I'd go to town on them, 20% is an insult. Was this ever a recall issue?? Has your car been serviced by Volvo, if so why wasn't it noticed, especially as it appears to be a 'common' issue.