Tag Archives: Software Problem

Volvo PHEVs Could Experience Loss Of Power And Will Not Restart

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Some 2022-2023 Volvo PHEV vehicles could experience a loss of drive power because of a software error that may prevent the combustion engine from starting. Owner notification letters are expected to be mailed in December.

Volvo first became aware of the problem after receiving complaints of a vehicle no start condition in several Volvo models. (A low coolant flow issue was determined to be a potential cause.) Further investigation found that the estimated cooling flow on the electrical drive (ED) cooling circuit was set to zero when max cooling was requested. The problem was caused by faulty software logic. When the estimated cooling flow is set to zero the inverter generator module will set available torque to zero and the combustion engine will not start.

If the issue occurs the driver will experience a warning message in dim that “Propulsion System Service is Required“, at start. The vehicle will continue to start and drive on electric propulsion until a second warning appears – “Turtle in DIM and speed limited to 75 km/h“. If the driver ignores these visual and mechanical warnings, the vehicle will display “stop safely” and lose electric propulsion as the high voltage battery is depleted.

The vehicles affected include:

2022-2023 Volvo S60
2022-2023 Volvo S90
2022-2023 Volvo V60
2022-2023 Volvo XC60
2022-2023 Volvo XC90

The problem will be corrected through a ECM software update. Volvo’s number for this recall is R10198 and the NHTSA campaign number is 22V-793.

If your vehicle is experiencing repeated problems it could be a Lemon. Know your Lemon Law Rights. If you have any questions about your rights and the California Lemon Law, please call our office at 1-888-395-3666 and get some great Lemon Law advice!

BMW Software Update For Missing CID Warning Information

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BMW North America, LLC (BMW) will be contacting the owners of certain 2022 i4 and 2022-2023 iX electric vehicles equipped with hybrid electric powertrains. These vehicles do not meet the requirements of the Federal Motor Vehicle Safety Standards (FMVSS) for “Control and Displays.” A software problem could affect the information that shows up on the Central Information Display (CID) of the vehicle’s console.

BMW first became aware of the problem in May 2022, during a quality check at the BMW vehicle assembly plant. Testers noticed that important safety warning messages were not showing up on the CID display during certain test configurations. They began an investigation that looked at vehicle build configurations, packages, options and other design features. BMW also investigated other vehicle types which were thought to have a production release involving the same software configuration. The investigation included an assessment of the Head Unit software functionality when the vehicle was in normal operating mode, and when the vehicle was placed in valet parking mode.

According to the defect report, a programming/coding issue was not allowing the display of certain warning messages in the CID, while in valet parking mode. BMW reviewed vehicle assembly information and supplier production records to determine the number and production dates of potentially affected vehicles. On June 29, 2022, BMW decided to conduct a recall. BMW has not aware of any accidents or injuries that may be related to this issue. Almost seven thousand vehicles are affected by this recall.

The vehicles affected by this problem include:

2022-2023 BMW iX xDrive40
2022-2023 BMW iX xDrive50
2022-2023 BMW iX M60
2022 BMW i4 eDrive40
2022 BMW i4 M50

Owners receiving recall notices will be asked to contact their BMW dealer to have the CID display’s head unit software updated. The NHTSA campaign number for this recall is 22V-483.

2018-2020 Buick Regal
Loss Of Power Brake Assist

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General Motors (GM) has determined that certain 2018-2020 Buick Regal vehicles may have a software defect that could affect the power brake assist system. Because of this error, these vehicles fail to meet the Federal Motor Vehicle Safety Standards (FMVSS) for “Braking Systems”.

In April 2022, a brake performance issue on a 2019 Opel Insignia, a sister vehicle of the Buick Regal, was brought to the attention of GM’s Speak Up For Safety (SUFS) program. An investigation was opened and the problem was found to be a software issue. According to the defect report, a software error could cause the hydraulic brake boost to fail and not respond to a loss of brake vacuum pressure. Tests conducted on a Buick Regal by GM, showed that stopping distance following the loss of vacuum brake pressure could exceed FMVSS 135 requirements by 1-5 percent.

Field data has identified four claims received by GM in which the vehicle’s invalid vacuum pressure diagnostic trouble code (DTC) was set and the hydraulic brake boost was disabled. None of these claims involved an allegation that the condition contributed to a crash, and GM is not aware of any crashes or injuries relating to this condition. In June, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a non-compliance recall.

According to the defect report, a loss of vacuum brake assist pressure will cause these vehicles to exceed the stopping distance requirements. If the vehicle’s vacuum-power brake assist partially or fully fails, braking events may require additional stopping distance, depending on the brake pedal force applied by the driver. Increased stopping distances could increase the risk of a crash.

NOTE: During a partial or full loss of vacuum brake assist, the vehicle may display a message in the Driver Information Center, a malfunction warning light may illuminate and the driver may notice increased brake pedal resistance.

Owners receiving notices will be asked to return to their dealers to have the EBCM software updated in their vehicles. The NHTSA campaign number for this recall is 22V-465.

2021 Chevrolet Traverse and 2021 Buick Enclave Front Air Bags May Not Deploy Properly

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General Motors will be contacting the owners of certain 2021 Chevrolet Traverse and 2021 Buick Enclave SUVs, about a problem that could result in the front air bag not deploying properly. Owner notification letters are expected to be mailed out beginning of August 2021.

According to the defect report, during a weekly service programming system (SPS) audit, it was discovered that a small number of 2021 Chevy and Buick models may have been manufactured with the incorrect sensing diagnostic module (SDM) data calibration. The data files were corrected in the SPS system and the problem was reported to GM’s safety program. Their investigation found a small number of 2021 Chevrolet Traverse and 2021 Buick Enclave vehicles may have received the same incorrect data and decided to conduct a safety recall.

General Motors will be contacting the owners of affected vehicles with instructions to update the calibration software in the SDM. GM’s number for this recall is N212340220 and the NHTSA campaign number is 21V-472

2021 Cadillac, Chevrolet And GMC Trucks Steering Warning Indicator

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General Motors has decided that a problem affecting vehicle steering exists in certain 2021 Cadillac, Chevrolet and GMC trucks. GM opened an investigation into the condition after receiving a field report of loss of power steering assist in a 2021 GMC Yukon.

According to the defect report, diagnostic trouble code (DTC) data obtained from the vehicle indicated that the power steering system may contain a software error that causes loss of power steering assist at startup or while driving. Vehicle testing demonstrated that manual steering remained available without power assist, but increased steering effort was required, particularly at lower speeds. In most cases, the malfunction indicator light will display on the instrument panel and a warning chime will sound. The condition is typically self-corrected at the next ignition cycle.

Vehicles Affected Include
2021 Cadillac Escalade
2021 Cadillac Escalade ESV
2021 Chevrolet Suburban
2021 Chevrolet Tahoe
2021 GMC Yukon
2021 GMC Yukon XL

GM will update the software in the vehicles’ power steering module. Owners will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at a GM dealer. A certain number of vehicles that were part of GM’s captured test fleet will require replacement of the steering gear motor kit in order to receive the updated software.

GM’s number for this recall is N212333900 and the NHTSA campaign number is 21V-455.

2019-2020 Chevrolet 6500HD Trucks Software Update For Safety Issue

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General Motors has decided that a software defect exists in certain 2019-2020 Chevrolet 6500HD trucks. These vehicles have been manufactured with tires that have a maximum speed rating of 75mph (regular production option (RPO) codes XDV for the front tires and YAP for the rear tires) and engine control module software that limits the speed of the vehicle to 79 mph.

In December 2020, Navistar, informed GM that vehicles may have been built with maximum speed limitation calibrations that exceed tire maximum speed ratings. A GM engineering manager reported the issue to GM’s Speak Up For Safety (SUFS) program and preliminary information was collected regarding the issue. GM opened an investigation in February 2021, confirmed the speed limiting software in the ECM and the body control module (BCM) would allow vehicles to reach 79 mph, exceeding the 75 mph maximum speed rating of the tires. In May 2021, GM’s Safety and Field Action Decision Authority (SFADA) decided to conduct a safety recall.

Owners receiving notification letters will be asked to return to their dealers to have the software calibration for the engine control module (ECM) set to limit the vehicles speed so it will not exceed the speed rating of the tires. GM’s number for this recall is N202325530 and the NHTSA campaign number is 21V-346.

2021 Infiniti Q50 And Q60 Engine Stall

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In February, Nissan initiated an investigation into reports of an illuminated Malfunction Indicator Lamp (MIL), reduced power and engine stalling in some 2021 Infiniti Q50 And Q60 vehicles. This investigation has resulted in a recall affecting approximately 13,000 vehicles.

According to the defect report, the engine control module (EMC)in the subject vehicles has a software function that prevents unintended acceleration based on monitoring torque input. A problem was found with the EMC software which prevented it from correctly reducing engine speed after an excessive torque detection. As a result, the vehicle would go into limp mode, reducing engine power, illuminating the MIL and eventually stalling. Nissan has received one report of an accident without injuries potentially related to this issue.

Infiniti will be notifying owners to return to their dealerships to get the ECM software reprogrammed. Infiniti’s number for this recall is R20C5 and the NHTSA campaign number is 21V-234.

2021 Cadillac Escalade Dim Seatbelt And Airbag Warning Lights

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Some 2021 Cadillac Escalade and Escalade ESV vehicles may fail to comply to the Federal Motor Vehicle Safety Standards (FMVSS) for controls and displays of the occupant crash protection system.

According to the defect report, the front passenger seat belt and airbag status lights on the overhead console could be unknowingly set to night mode, making them not visible to vehicle occupants.  The body control module (BCM) software in these vehicles may inadvertently set the “night mode” in the daytime when the remote start is used or when the vehicle is turned off and re-started without opening the door for ten minutes.  If night mode is active during the daytime the driver and front passenger may not notice the warning that the seat belt is unbuckled or that the airbag is deactivated.  This problem can increase the risk of injury during a crash.

General Motors will be notifying owners of affected vehicles beginning in February.  Dealers will correct the problem by updating the BCM software.  GM’s number for this recall is N202319980 and the NHTSA campaign number is 20V-790.