VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles

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Fri 20 Jan 2017 19:45
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - Swiss bloke

This is, apparently, a common problem.


The bit I don't get is if this is a problem for non VW engines or if it is only VW.

I would serious suggest avoiding VW TDI Bluemotion: repair was £700 and VW was not interested in making a contribution to the repair. On a four year old car.

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Fri 20 Jan 2017 19:55
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - Steveieb
Big payouts looming on all fronts so less money for goodwill payments maybe?
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Fri 20 Jan 2017 20:05
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - RT

VW Adblue heater issues seems to be common in the US - but I've not seen any reports of it here.

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Fri 20 Jan 2017 20:23
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - elekie&a/c doctor

Becoming a common issue on european VWs.Lucky they didn't change the control unit first.A much more expensive fix.

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Fri 20 Jan 2017 21:00
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - brum

Eh? Adblue needs a heater????

Phew! I came so close to changing our 18 yr old Alhambra for a new Sharan 2 or 3 years ago, but I noticed the Adblue system (which the salesman glossed over and pretended to know nothing about) and thought, hmm, need to know more about this. A few days later after reading a bit about it, the fever had passed.

What with inaccessible and expensive egrs prone to failure and now this new expensive failure mode, dpfs, dmfs etc etc there is really no way I want a new VAG diesel now.

I'll keep the old girl with the humble 1.9tdi old school rotary pump going a little while longer. Might even treat her to a new cambelt (almost 10 yrs old but I cant seem to justify spending £400 on her, actually I'm frightened that the dealer might cock it up)

As for VAG dealers attitudes to customers - shameful.

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Fri 20 Jan 2017 21:21
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - RT

Adblue freezes at -11 degrees C - a heater is needed to stop it going below.

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Mon 23 Jan 2017 15:05
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - John F

Adblue freezes at -11 degrees C - a heater is needed to stop it going below.

Hardly relevant in the UK, methinks. Why bother to repair it? If the Adblue tank has a heater, why doesn't the diesel tank have to have one too?

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Mon 23 Jan 2017 16:49
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - Bromptonaut

Hardly relevant in the UK, methinks. Why bother to repair it? If the Adblue tank has a heater, why doesn't the diesel tank have to have one too?

Other strategies protect diesel including winter additives and heated filters.

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Mon 23 Jan 2017 18:38
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - brum

Hardly relevant in the UK, methinks. Why bother to repair it? If the Adblue tank has a heater, why doesn't the diesel tank have to have one too?

I suspect that if on board diagnostics find any problem with the adblue system it defaults to refusing to restart, just as what happens if the adblue tank gets too low. The driver then has to arrange a tow to the nearest vw dealer to have it refilled and reset using their expensive diagnostic system. I hate to think how much that costs. So even a fault with something thats not relevant (adblue heater in the uk) will immobilise the car.

Someone tell me I'm wrong.

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Mon 23 Jan 2017 22:26
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - bazza

From what I've read, it triggers an engine check light, which is, I understand these days an MOT fail. So unfortunately, it has to be fixed. I wonder if anybody's found a cheap way around it.

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Mon 23 Jan 2017 22:47
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - elekie&a/c doctor

No cheap fixes on modern cars,I'm afraid. That went out with the demise of the Cortina. Engine Mil light on ,is not an Mot fail,although Abs/Esp,Airbag and brake warning are.

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Tue 24 Jan 2017 08:56
VW SHARAN BLUEMOTION 4motion 138bhp TDI - VW SHARAN 2012 TDO ADBLUE heater failure 40k miles - Bromptonaut

Engine Mil light on ,is not an Mot fail,although Abs/Esp,Airbag and brake warning are.

Generic engine 'fault' light (eg the so called K light* on the Xantia) is one thing. What's position if it's the light for a specific anti pollution fault?

*The pictogram of the injection system makes a letter K

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