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AdBlue/DEF Range Thread

283K views 543 replies 124 participants last post by  discosporti  
Adblue seems to be a bit of a windfall for dealers and vendors of Adblue. A dealer near me offers an Adblue refill for €55. ( Apologies for those working in imperial. Watch the ratios; don't mind the numbers.) As the DS takes 10 - 14 litres of Adblue to refill this seems a bit pricey. I bought a 10 litre can of Adblue for €18 (that's €1.80 per litre) yet most garages are selling Adblue in 2-litre bottles for €12 ( that's €6 [per litre.) Adblue is not a hazardous substance. It will cause an odour and possibly crystallise if spilt. But it is not a major hazard. Any careful driver can buy Adblue and refill the tank without a problem, Just be careful. Use a funnel and have a steady hand and all will be well.

I am not impressed by the attempt to convince us that Adlblue can only be refilled by garages at our expense.
 
I have been getting about 8,000 miles per fill before the warning light comes on. There will be a reserve of maybe 4-5 litres at this stage. I bought 10 litres and refilled the reservoir myself and the system reset automatically. No problems there. beware price gouging though as Adblue is simply urea. Some dealers are selling it as snake oil at much-inflated prices. I was able to buy 10 litres for €18 ( about £15.70 = £1.57 per litre) and fill the tank myself. It's very simple and straightforward.
 
The manual says that the minimum top up, when the warning light is on, is 4 litres. Most garages sell Adblue in 2 litre bottles so you would need a minimum of 2 to refill and trip the sensor to reset.
 
Had a chat with my dealer today and learned a few things about Adblue. Adblue levels are monitored by a sonic sensor which determines the level of Adblue in the tank by reading the surface level from above. MY17 cars are prone to warnings if the tank is even a little overfilled which can result in an engine shut off - engine will not start as Adblue is too low (= cannot be measured by an oversensitive sensor) MY16 are not so sensitive.

The second issue is that poor quality Adblue warnings have been occurring due to a software fault. Nonetheless, when buying Adblue it is important that it complies with the relevant standard.
 
Had Adblue issues with my 2016 Disco Sport after 5 years without issue. Adblue counter dropped from 14,000 Km to 900 km left overnight. The the countdown clock, 830 Km to engine shutdown. Main dealer said they cleaned the tank and sensors and reset the computer. Fault reappeared three weeks later. Main dealer then did a PCM(?) reset which fixed the problem for now (fingers crossed). However they did not check the DEF injector which seems to be a common source of the fault.

I was charged for the repair each time, second time round seemed like an imposition. Main dealer explained that they were only allowed to investigate the fault one step at a time and finish the repair once the fault disappeared. I feel that they should investigate the fault in full to ensure that the customer is not a repeat visitor for the same fault, paying for each visit to have the recurring fault fixed. What part of premium product, premium customer service are they missing?