Replacing coolant tank with Silicon bag

[GolfTi]

Row Locks.

I have the extended VW warranty. Valid up to 100k.
My better half has just had a new engine (1.4 TSI) after 9 years under this warranty.
Yes the 1.4 twin chargers were very unreliable but at least her car now has a new engine with a 2 yr VW warranty.

It works.

[golfdave]

Row Locks.

I have the extended VW warranty. Valid up to 100k.
My better half has just had a new engine (1.4 TSI) after 9 years under this warranty.
Yes the 1.4 twin chargers were very unreliable but at least her car now has a new engine with a 2 yr VW warranty.

It works.

When I bought my MK7 in 2014 the extended warranty took the factory standard up to a maximum total of 5yrs or 90,000miles whichever occurred sooner...

I know I bought it....I would be very surprised if they changed that in the UK..& you bought your MK7 in 2013...

& those twin charges were replaced due to the well known problems..VWUK did a few engines...

[GolfTi]

VW Eos 2008 with 80k on the clock. Full VW service from new. (1.4 TSI 160)
Piston and turbo failure. New engine and turbo under VW extended warranty.

These warranties do work but I’m questioning the logic of removing the bag from the cooling system and then having a claim refused.

[GolfTi]

The VW extended warranty is valid up to 100 k for me. Costs approx £ 235 per year.
Mine is July 2013.

I’ll leave the bag in.

[mcmaddy]

Has anyone thought that the one or two bags that have split might have been faulty? This seems to be going the same way as the pedal box thread, one person gets one and then the rest follow blindly because it must be true. I honestly cannot see the point in replacing an item that's still doing what the manufacturer intended it to do. For a car under three years old to have the bag removed do you expect to get anything replaced under warranty in the case of failure of something else in the coolant system? VW will be waving you away and laughing at the same time. Out of warranty then knock yourselves out.

[Talk-torque]

Different matter once the car is out of warranty though.

[Yusee]

The question how likely is this to happen? 10 cases per 100,000 cars sold? Tiny risk- ignore it, allow the bag to do its job.
100 cases per 100,000 cars? still wouldn't worry me.
1000 per 100,000?
These forums can create a certain amount of hysteria- a few isolated cases giving the impression of an endemic. I would be interested to hear if anyone has any data on how common this problem is.

[mcmaddy]

Different matter once the car is out of warranty though.

yes totally agree 👍

[Garhan]

When I was talking to the dealer parts guy last week,he told me,that they have seen quite a few burst,although he didn’t put a number on it.
He also said that they had two cars come in from independent garages,that had the bag burst and the independent changed the heater matrix but,after that they couldn’t get all the silicate flushed out of the system.They had to book it in to the main dealer as,they have a machine specifically for flushing the system out.they hook it up to this and it goes through a process of flushing back flushing.
It does this for a preset time,then all is ok.
As my car is now four years old I decided to remove it.

[Yusee]

When I was talking to the dealer parts guy last week,he told me,that they have seen quite a few burst,although he didn’t put a number on it.
He also said that they had two cars come in from independent garages,that had the bag burst and the independent changed the heater matrix but,after that they couldn’t get all the silicate flushed out of the system.They had to book it in to the main dealer as,they have a machine specifically for flushing the system out.they hook it up to this and it goes through a process of flushing back flushing.
It does this for a preset time,then all is ok.
As my car is now four years old I decided to remove it.

Interesting. If dealers are seeing cases regularly then it might be an issue worth addressing once out of warranty.