The engine management system in your vehicle is a computer that helps control the engine. In some 2020-2021 BMW models, this system could misbehave when you start the engine, causing the brake assist to fail.
Risk if Unfixed
If the brake assist fails, you could struggle to slow down or stop your vehicle, especially on steep hills or during hard braking. This could increase the risk of a crash.
Free Fix
Your BMW dealer will update the engine management software to fix the issue, and this repair is completely free. You can schedule the update after checking repair availability with your dealer, and you can contact BMW customer service at 1-800-525-7417 for more information. This timing describes the original 2021 filing; contact your dealer now to confirm the free repair is available.
Show original NHTSA language
Original — What Happened
BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles. During engine start, the engine management software may cause loss of braking assist. Full mechanical braking (without assist) remains available.
Original — Risk if Unfixed
Loss of braking assist can increase the risk of a crash.
Original — Remedy
Dealers will update the engine management software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact BMW customer service at 1-800-525-7417.
The counterbalance shaft in your engine helps balance the rotation of the crankshaft. In some 2019-2020 330i, 330i xDrive, and Z4 models, the needle roller bearings that hold it in place were installed incorrectly, which could cause the shaft to come loose.
Risk if Unfixed
If the counterbalance shaft loosens, your engine could suffer severe damage. This could lead to costly repairs, or even leave you stranded on the side of the road, increasing the risk of a crash.
Free Fix
Your BMW dealer will replace the entire engine with a new one, at no cost to you. This is a free repair, and you should schedule it after checking repair availability with your dealer. This timing describes the original 2019 filing; contact your dealer now to confirm the free repair is available.
Show original NHTSA language
Original — What Happened
BMW of North America, LLC (BMW) is recalling certain 2019-2020 330i, 330i xDrive, and 2019 Z4 vehicles. The needle roller bearings of the counterbalance shafts may have been improperly installed, potentially causing the counterbalance shaft to loosen.
Original — Risk if Unfixed
If the counterbalance shaft loosens, severe engine damage could occur, increasing the risk of a crash.
Original — Remedy
BMW will notify owners, and dealers will replace the engine, free of charge. The recall began December 13, 2019. Owners may contact BMW customer service at 1-800-525-7417.
This model year has 2 recorded safety recalls. Model-level listings do not establish VIN-specific open recalls or whether this vehicle is safe to drive. Check your VIN and contact the manufacturer for recall instructions.
What is the ENGINE recall for the 2020 BMW 3 Series? (Campaign #21V598000)
The engine management system in your vehicle is a computer that helps control the engine. In some 2020-2021 BMW models, this system could misbehave when you start the engine, causing the brake assist to fail. If the brake assist fails, you could struggle to slow down or stop your vehicle, especially on steep hills or during hard braking. This could increase the risk of a crash. Your BMW dealer will update the engine management software to fix the issue, and this repair is completely free. You can schedule the update after checking repair availability with your dealer, and you can contact BMW customer service at 1-800-525-7417 for more information. This timing describes the original 2021 filing; contact your dealer now to confirm the free repair is available.
What is the ENGINE recall for the 2020 BMW 3 Series? (Campaign #19V732000)
The counterbalance shaft in your engine helps balance the rotation of the crankshaft. In some 2019-2020 330i, 330i xDrive, and Z4 models, the needle roller bearings that hold it in place were installed incorrectly, which could cause the shaft to come loose. If the counterbalance shaft loosens, your engine could suffer severe damage. This could lead to costly repairs, or even leave you stranded on the side of the road, increasing the risk of a crash. Your BMW dealer will replace the entire engine with a new one, at no cost to you. This is a free repair, and you should schedule it after checking repair availability with your dealer. This timing describes the original 2019 filing; contact your dealer now to confirm the free repair is available.