AdBlue system flush
An AdBlue system flush cleans the tank, lines, metering pump and dosing injector after contamination — the step beyond a simple drain. Whether a flush is enough depends on what went in. Call 01295 380724 for an honest assessment.
A drain empties the tank. A flush addresses everything downstream of it, which is where the precision components live. Demineralised water lifts water-soluble contamination; a follow-up flush with AUS 32 returns the circuit to the right fluid rather than leaving it wet with water that would dilute the refill. Hydrocarbon contamination is the case where flushing alone has a genuine ceiling, and saying so upfront is the difference between a job done and a job done twice.
Call 01295 380724 From just £89 call-out fee
AdBlue system flush — the severity verdict
| Severity | Likely recoverable Usually resolved by a drain and flush, with a fluid-quality check afterwards. |
|---|---|
| What went where | AdBlue system flush |
| Direction | SCR system fault |
| Typical cost | £220–£520 typical total, from a £89 call-out |
| Time on site | About 90 minutes |
| Call-out | From just £89 call-out fee |
| Helpline | 01295 380724, 24 hours |
£89 is the call-out. An AdBlue tank drain and flush is quoted on the phone before a technician travels. If the SCR system needs component replacement — dosing injector, pump, tank or catalyst — that is separate, and you will be told before any work starts. If this is a job we cannot fix at the roadside, we will tell you that on the phone rather than after we arrive.
What to do right now
- Tell whoever quotes you exactly what went in — the flush procedure differs by contaminant.
- Do not run the engine before the flush if a hydrocarbon is involved.
- Call 01295 380724.
What a technician actually does
Drain, demineralised water flush through tank and lines, AUS 32 flush, injector and pump assessment, refill with certified fluid, codes cleared and dosing verified.
Why this is not the same job as the other direction
This is an SCR system fault rather than a wrong fill, so the first job is reading the codes rather than guessing at a part. The same dashboard message covers a bottle of fluid and a catalyst.
Common questions
Is a flush always enough?
For dilution and water-based contamination, usually. For diesel, petrol or oil, often not — the components may need replacing, and you should be told that before the work rather than after.
Can you flush it with water alone?
Demineralised water is the first stage, but leaving the circuit wet with water dilutes the refill. A follow-up flush with AUS 32 is what returns it to specification.
How long does it take?
Around an hour and a half on site for a standard flush.
What customers say
4.8 out of 5 from 2,190 Trustpilot reviews. What reviewers mention most is that the technician stayed calm and professional with a driver who was embarrassed and stressed, and that somebody arrived when they said they would.
The most common criticism is price. People do not expect a wrong-fluid job to cost what it costs, and that is a fair complaint to publish rather than bury. The answer is the From just £89 call-out fee, a quote given on the phone before a technician travels, and being told when a job cannot be done at the roadside rather than after somebody has arrived and charged for the visit.
Related AdBlue problems
Start from a symptom instead
Where we cover
Who you are dealing with
This site is published by Forecourt Assist, which operates AdBlue in Fuel. Forecourt Assist is a trading name of Fuel Fixer Ltd, company no 08520551, registered at Fairway House, Portland Road, East Grinstead, RH19 4ET, a company of Fuel Fixer International. The group, Fuel Fixer International, is owned by Stockbridge Capital Holdings.
Reference: Diesel particulate filter (Wikipedia).
Across the Fuel Fixer network
These are sister brands of the same company, not unrelated sites. Forecourt Assist keeps the canonical list at forecourtassist.co.uk/network rather than duplicating it here.