Toyota Prius Recall R/2021/260: The Pre-crash Brake Assist Function Can Be Delayed, Who Is Affected And What To Do
- Urgent
- How serious
- 9 Aug 2021
- Launched
- 540
- vehicles in the UK
- WGG43
- Manufacturer’s campaign code
Toyota recalled Prius vehicles built between 28 August 2020 and 25 May 2021. The pre-crash brake assist function can be delayed. The dealer will reprogram the Brake booster assembly with master cylinder ECU. You won't usually pay for it.1
What’s Wrong
The pre-crash brake assist function can be delayed.
DVSA's Original Wording
Concern: THE PRE-CRASH BRAKE ASSIST FUNCTION CAN BE DELAYED Defect: The pre-crash brake assist function can be delayed. Remedy: Reprogram the Brake booster assembly with master cylinder ECU.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: the pre-crash brake assist function can be delayed.
The Fix
The dealer will reprogram the Brake booster assembly with master cylinder ECU. The fix is a software update, which usually takes under an hour at the dealer.
Are You Affected?
Prius built between 28 August 2020 and 25 May 2021 may be included. Toyota estimates 540 vehicles in the UK. Enter your registration to check, then confirm by VIN with Toyota, because not every car in the date range may be included.
Which Car Is It?
Choose the make and model so we can match recalls to your car.
What To Do Now
- Check your car by registration above, then by VIN with Toyota.
- Book with any franchised Toyota dealer, quoting the campaign code WGG43 or the DVSA reference R/2021/260. See how to get a Toyota recall fixed.
- Follow the letter's instructions until the repair is done. See can you drive a car with a recall?.
Related Recalls
| Launched | Vehicle and fault | Severity | Reference |
|---|---|---|---|
| PriusRelay and Wire Harness installation on certain Prius | Book soon | R/2026/027 | |
| Prius, Prius PHVIncorrect programming in relation to transmission shift position status might cause hybrid system to shut down | Urgent | R/2021/332 | |
| Auris HV, PriusUnder certain circumstances the hybrid unit may shut down and cause loss of motive power | Urgent | R/2020/190 | |
| Prius, Prius PHVImproper assembly of the electrical contacts in the driver's seat belt reminder switch | Urgent | R/2020/025 | |
| PriusAn electrical short circuit in the combination meter could occur | Urgent | R/2019/440 |
This is one of 250 Toyota recalls in DVSA’s data. The Toyota recall launched before it was R/2021/185 on 28 Jun 2021, for the inside of the high pressure fuel pump may be worn or damaged over time during…. The one launched after it was R/2021/051 on 16 Aug 2021, for the possibility that the engine timing belt may wear out prematurely. You can also see every Toyota recall, the Toyota Prius recall history, all recalls launched in 2021 and brake recalls across every make.
Source: DVSA recall R/2021/260, launched 9 August 2021. Data updated 15 October 2026. How we grade urgency.
Sources
- The Code does not itself say repairs are free. GOV.UK guidance says "You will not usually have to pay for any repairs or parts under a safety recall." gov.uk Checked 15 Oct 2026.