NHTSA Office of Defects Investigation
Defect Petition DP23-003: Malfunction Indicator Light / No-Start
- Closed
NHTSA's Office of Defects Investigation opened Defect Petition DP23-003 on July 25, 2023 and closed it on May 20, 2024. NHTSA's investigations file lists the 2023 Mercedes Benz GLC 300 for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- DP23-003 (also written DP23003)
- Investigation type
- Defect Petition A petition asking NHTSA to open a defect investigation; NHTSA grants or denies it, and granting one opens an investigation.
- Status
- Closed May 20, 2024
- Opened
- Closed
- Vehicle or equipment manufacturer
- Mercedes-Benz USA, LLC
- Component
- Power Train
- Vehicles and equipment
- 2023 Mercedes Benz GLC 300
A recall appears here only when NHTSA's investigations file links one to the investigation; NHTSA's summary or record can name others.
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Defect Petition DP23-003.
try.vin does not copy NHTSA's investigation documents; NHTSA's investigation record lists the ones NHTSA has published.
In a letter dated July 2, 2023, Aldelberto A. Cordova (the petitioner) submitted a petition requesting that NHTSA initiate an investigation of an alleged defect within the “ISG 48-volt on-board electrical system,” which resulted in warning light illumination as well as an inability to start the vehicle in a 2023 Mercedes-Benz GLC300. ODI reviewed the petition, complaint data in NHTSA's databases and information gathered from an Information Request (IR) letter sent to Mercedes-Benz. Examination of this information indicates that the subject component listed in the petition is not capable of causing the a loss of motive power. The alleged defect cited in the petition was caused by a software deviation in the Central Powertrain Controller (CPC), which is a separate system and independent of the 48-volt system. After thoroughly assessing the material submitted by the petitioner, information in NHTSA's possession, information submitted by Mercedes-Benz, NHTSA does not find that a formal investigation is warranted. Accordingly, the Agency is denying the petition. As with all potential motor vehicle safety risks, NHTSA will continue to review any new information or incidents as they are submitted to the Agency. A Federal Register Notice (FRN) further detailing NHTSA's reasons for denial of the petition will be published in the future. The petition and its attachments can be reviewed at NHTSA.gov under reference ODI number 11533472.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Defect Petition DP23-003. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
Mercedes Benz
Mercedes Benz GLC 300
What an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Mercedes Benz VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for DP23-003
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.