Concerns with Mercedes EQC and Potential Costly Repairs
We’ve recently received our second inquiry in three weeks regarding an issue with the Mercedes EQC. Another customer is reportedly facing a €35,000 repair bill due to a fault, leaving them without viable support or solutions.
Reported Issue: P1D2800 Error
The error code P1D2800 suggests an internal counter (e.g., for HV contactor cycles) has reached its limit, triggering a non-resettable fault. This effectively forces a full battery replacement (~€35,000) even if the battery is otherwise healthy.
Long-Term Concerns
From our research into Mercedes-Benz over the past 15 years, we’ve observed the introduction of error counters and programmed limitations in several components, such as:
- SBC pumps
- ELV (Electronic Steering Locks)
- EIS (Electronic Ignition Switches)
- 7G and VGS4 transmissions
More recently, this pattern has extended to components in hybrid and electric vehicles, such as the Smart ED and EQC. While we had hoped that such practices would not affect newer EQ models, this case suggests otherwise.
Potential Implications for EQ Owners
If this issue is confirmed as a non-removable BMS flag triggered by a programmed error counter, owners could face costly battery replacements—even if the battery itself is fully functional. The reported repair costs of €35,000–€40,000 are not sustainable for consumers and raise serious concerns about ownership costs outside warranty coverage.
Our Recommendation
We strongly advise caution for anyone considering the purchase of a new or used Mercedes EQC—or other EQ models like EQS, EQA, or EQB—until these concerns are addressed. For current owners, regular maintenance and early detection of potential issues may help mitigate the risk of encountering similar problems.
A Call for Transparency
The automotive industry must prioritize transparent and consumer-friendly practices. Issues like these undermine trust and highlight the importance of robust consumer protections. We encourage Mercedes-Benz and other manufacturers to provide clear resolutions for such errors and offer cost-effective repair solutions.
Preporuka IZBJEGAVAJTE EQ SERIJU
Programmed defect error: P1D2800 – The frequency counter “switching cycles of contactor” of the HV battery module has reached its finale value
Part Number: A2939008900, A2933407400
New battery: around 35200€
Affected EV: EQC EQB EQA
