Audi Q4 e-tron (2021–today)BrakesABS and stability control (ESP)
Campaign 45BF: stability control module missing pump motor screws in the Audi Q4 e-tron
According to the fiches-auto.fr data sheet, campaign 45BF affects the electronic stability control module because of missing screws in the pump motor, in cars built from 25 March to 23 April 2024.[1]
Why this rating?
High severity: Risk of a serious engine, turbo or gearbox failure.
Frequency occasional: Preventive campaign on a one-month batch cited only by the data sheet; no failure cases are recorded.[1]
Symptoms
- A module fault can switch on the ABS/ESP warning light; the data sheet describes no specific symptoms.[1]ABS/ESP light: other faults that cause it · Garage soon
- A module fault can switch on the ABS/ESP warning light; the data sheet describes no specific symptoms.[1]ESP light: other faults that cause it · Garage soon
Why it happens
Affected years and cars
The data sheet limits the campaign to production from 25 March to 23 April 2024.[1]
How much it costs to repair
Includes: Campaign correction at an official Audi dealer.[1]
We have not found the cost; in a recall campaign the correction is usually free at the official network, but the data sheet consulted does not detail it.
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
- Use the VIN at an official Audi dealer to check whether the car is in campaign 45BF.
Parts needed
The part or kit that fixes this fault, according to the sources.
This fault has a manufacturer recall: if your car is included, the repair is free at an official service centre. Check with the manufacturer before buying the part. View the recall
Electronic stability control module[1]
Regulates the braking pressure at each wheel to maintain stability.
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Recalls, campaigns and claims
RecallAudi (según fiches-auto.fr) · March 2024 · Ref. 45BF
Campaign 45BF: stability control module (according to the data sheet)
Cars built from 25 March to 23 April 2024 according to the fiches-auto.fr data sheet; not verified in an official source nor confirmed for cars sold in Spain.[1]
What owners say
Frequently asked questions
Where is it documented?
Only in the fiches-auto.fr data sheet; we have not been able to verify the scope in Spain.[1]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other faults of the Audi Q4 e-tron
The faults of its engines are on the Audi Q4 e-tron page.
The same problem in other cars
- Critical severityFrequency: Very frequentHyundai Tucson IIIFire risk from the ABS control module (HECU)Yes. Hyundai recalled the Tucson TL built between February 2017 and August 2020 (campaign 11DC03) because the ABS module can fail internally and cause a short circuit with a risk of fire in the engine bay, even with the car parked. In the US the same campaign (20V543000) covered model years 2016-2021.
- Critical severityFrequency: Very frequentKia Sportage IVShort circuit in the ABS/ESP unit with fire riskYes: Germany's KBA and the US NHTSA have recorded several campaigns (2021 and 2025) over a short circuit in the ABS/ESP unit that can cause a fire in the engine bay, even with the car parked and switched off.
- Critical severityFrequency: Very frequentOpel Corsa FBrake fluid leak and loss of ABS/ESP from the EBS valve block (2024 production)The manufacturer recalled Opel Corsa F cars built between 24 May and 27 August 2024 because of an EBS valve block with a casting defect that can cause an internal brake fluid leak and the loss of stability control, ABS and electronic brake distribution.
- Critical severityFrequency: Very frequentPeugeot 2008 IIReduced braking effectiveness from an HBC electronic fault (2023 production)On Peugeot 2008 II models built between 2 October and 15 November 2023, an error in the vacuum circuit can make the electronic unit send an invalid value to the hydraulic brake compensation (HBC), which reduces braking effectiveness.
- Critical severityFrequency: Very frequentPeugeot 208 IIBrake fluid leak and loss of ABS/ESP due to the EBS valve block (2024 production)The manufacturer recalled Peugeot 208 IIs built between 27 May and 6 June 2024 over an EBS valve block with a casting defect that can cause an internal brake fluid leak and loss of ABS and ESP. The Opel Corsa has an equivalent campaign with different dates.
- Critical severityFrequency: OccasionalAudi e-tronElectromechanical brake booster failure and corrosion of the brake pressure unit (ABS/ESC)In 2021 Audi recalled two batches of the e-tron because of the electromechanical brake booster (2,303 cars, recall 47R1) and the corrosion of the brake pressure unit (361, recall 47R7). Both can affect the brake booster, the ABS and the ESC and lengthen the braking distance.
All faults with the ABS and ESP (130)Cars with the most brakes problems
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- Todos los problemas del Audi Q4 e-tron (4 testimonios)fiches-auto.fr · Other source · consulted 5 October 2026 · in French