Tl* the contact owns a 2019 Mercedes-benz c300w4. The contact received notification of NHTSA campaign number: 19v586000 (electrical system). The contact stated that Mercedes-benz of caldwell (located at 1230 bloomfield ave, west caldwell, nj 07006, (973) 227-3600) exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified. The part was not available for the…
2019 Mercedes-Benz C-Class electrical problems
severe 11 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
11
Recalls
0
Avg fix
$850
1injury
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: A 2019 Mercedes C-Class with electrical issues can suffer sudden, dangerous loss of engine power at highway speeds without warning—a defect Mercedes has acknowledged via recall but failed to provide parts or timely fixes for months or years. Before buying one used, verify any open recalls are completed, get a pre-purchase diagnostic to check for engine control unit software status, and understand that some of these vehicles remain unfixed and legally on the road.
Owners report sudden, complete loss of engine power during normal driving, often at highway speeds, with a Check Engine Light appearing simultaneously. One owner lost all acceleration at 65 mph on the I-405 freeway in heavy rain and had to coast across lanes to the shoulder; another struggled to exceed 20 mph four blocks before a freeway entrance. Both incidents created immediate crash risk. One vehicle regained power after a restart; another continued sluggish acceleration requiring multiple repair shop visits.
Mercedes issued NHTSA Campaigns 21V058000 and 19V586000 for this electrical system defect. Service bulletins and factory documents specify that an engine control unit software update and mixture adaptation reset are required. However, owners report that dealerships repeatedly stated parts were unavailable for repair, and promised over-the-air (OTA) updates never arrived on reasonable timelines—some owners waited months calling dealerships without resolution. One documented case shows an OTA update was performed but the acceleration loss recurred.
A separate complaint describes an automatic trunk lid closing unexpectedly and striking two occupants in the head, though neither incident was reproduced by a dealer. One owner also alleges odometer mileage changed after OTA updates were performed, creating documentation discrepancies reported to the FTC and DMV.
Same Mercedes-Benz C-Class electrical reports on nearby years: 2016 · 2017 · 2018
Failure modes owners describe
Loss of engine power / acceleration cutout during driving
Engine suddenly loses power or fails to accelerate, often at highway speeds, forcing the vehicle to coast to safety. Check Engine Light illuminates simultaneously. Multiple reports indicate this occurs without warning and creates immediate crash risk.
When: Reported at various speeds (20 MPH to 65 MPH) and mileages (8,004 miles documented); some incidents within days of A1 service
Symptoms owners cite: Sudden inability to accelerate beyond 20-30 MPH; Complete loss of engine power at highway speeds; Check Engine Light illumination; Vehicle sluggish and hesitant during acceleration; Requires restart to resume normal operation in some cases
Codes mentioned: P019185
Repairs/costs cited: Mercedes service bulletins and LI/service documents specify software update of engine control unit (ECU/ME control unit) and reset of mixture adaptations required. Some dealers performed OTA (over-the-air) updates; however, at least one case reports failure recurrence after OTA update.
Recalls/TSBs owners mention: NHTSA Campaign 21V058000 (Communication, Electrical System) issued; repair described as OTA update. Multiple owners report manufacturer exceeded reasonable time to provide parts or OTA update. No recall notice sent to all affected owners. Mercedes waived repair fee in at least one documented case. Manufacturer indicated update would happen automatically in some communications.
Recall repair parts unavailable / OTA update delayed
Owners received NHTSA recall notification but cannot obtain repair. Dealerships report parts unavailable for physical recalls, while OTA updates promised by manufacturer have not been delivered on reasonable timelines. Owners left without remedy for extended periods.
When: Ongoing as of complaint dates; timeframes of months to years mentioned
Symptoms owners cite: Recall notification received but parts listed as unavailable; No timeline provided for OTA update; Dealerships unable to schedule recall repair; Owner anxiety and safety concerns unresolved
Repairs/costs cited: NHTSA Campaign 21V058000 and 19V586000 listed as applicable. Dealers confirm OTA or physical parts required but unavailable. Some owners report calling dealership multiple times over months without resolution.
Recalls/TSBs owners mention: NHTSA Campaigns 21V058000 and 19V586000 issued; repair promised via OTA or parts replacement. Manufacturer stated OTA would occur automatically but provided no timeline. Multiple owners report manufacturer has not met reasonable repair timelines. At least one Puerto Rico authorized dealer reportedly requested customer payment for recall work.
Automatic trunk lid uncontrolled closure / impact hazard
Automatic trunk lid closes unexpectedly and strikes occupants in the head. Two separate incidents reported within 15 minutes of each other, involving different occupants, without warning or visible external cause.
When: Specific timing not stated; no confirmation of reproducibility by dealers
Symptoms owners cite: Trunk lid closes without command while loading/unloading groceries; Strikes occupant's head; No warning prior to closure; No visible damage to persons
Repairs/costs cited: Not reproduced or confirmed by dealer or independent service center. No visible injury reported except brief head pain.
Odometer mileage alteration during OTA updates
Vehicle odometer mileage changed after OTA updates were performed, creating discrepancy between purchase documentation, registration, Carfax, and post-OTA recorded mileage. Owner suspects odometer fraud occurred during service.
When: Discovered after two OTA updates; original purchase mileage approximately 54,000 miles
Symptoms owners cite: Mileage discrepancy discovered post-OTA; Multiple conflicting mileage documents; Discrepancy reported to FTC and DMV
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
I am writing to formally report an ongoing issue and safety concern with my vehicle. Since the day I purchased the car, I have experienced numerous mechanical problems and have spent a significant amount of money on repairs. In August, I had to take my vehicle to a local repair shop three times due to persistent issues. The car was also towed by AAA three separate times for safety reasons. My…
Had electrical trouble with your 2019 Mercedes-Benz C-Class?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2019 Mercedes-Benz C-Class?
It's a meaningful issue. 11 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Based on the 11 complaints filed, electrical issues most often appear around 31,002 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2019/Mercedes-Benz/C-Class.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.