Mercedes
Mercedes hybrid and electric car service and repairs
We work on electrified Mercedes cars: the plug-in hybrids in the A, C and E Class, including the diesel E 300 de, as well as the EQ electric models. We check the battery, the charging and the recalls that apply to your model.
Why take your Mercedes to a specialist
Electrified Mercedes cars aren’t repaired like a petrol car. Without the right equipment and high-voltage experience, the diagnosis stays half done.
- 01
EQA and EQB: battery recall
On some EQA and EQB cars built between 2021 and 2024, the battery could short circuit if charged above 80%. Until it was replaced, Mercedes recommended charging to 80% and parking outdoors. We check whether your car is affected.
- 02
Plug-in hybrids: range drops as the battery ages
On older plug-in hybrids, electric range drops gradually as the battery wears. A sudden drop, or a battery that no longer charges fully, usually points to a weak module or a battery controller problem.
- 03
Diagnostics across the whole electrified system
We read the codes from every control unit involved and measure the battery, inverter and charging. We separate a weak module from a flat 12 V battery, a connector or a software fault.
We test first, then suggest
What we do on Mercedes hybrids and EVs
We handle the systems we see most often on electrified cars, from the high-voltage battery to charging, brakes and maintenance.
Many Mercedes owners come to us after the range dropped, after a dashboard message or after a quote for a new battery. We test first and tell you what we confirmed.
- High-voltage battery diagnostics
- Testing every module and the battery’s condition
- The charging system, where relevant
- The 12 V battery and the DC-DC converter
- Regenerative and friction braking
- Battery and inverter cooling
- Maintenance: filters, fluids, tyres
- Software, where we have access for the make
Mercedes models we see often
Every model has its weak points. Here is what we know about the most common ones:
Plug-in hybrid
C 350 e și C 300 e
We test the battery and tell you how much real electric range it has left. We also check the transitions between the electric motor and the petrol engine.
Plug-in hybrid
A 250 e și E 300 de
Newer plug-in hybrids, one petrol, the other diesel. We check the battery, charging and the battery controller.
Electric
EQA și EQB
We check the battery recall first, then the battery’s condition and charging.
Electric
EQC
A heavy electric SUV with two motors. We check the battery, its cooling, charging and the brakes.
When to bring your Mercedes in
It makes sense when range drops, charging fails, a warning message appears or another garage lacks the equipment for the electrified side.
Warning light or reduced power
The system is protecting itself. We check the battery, inverter and signals before any expensive part.
Less and less electric range
Battery wear, a weak module or a cooling problem reduces range. The test shows the cause.
Charging from the socket fails
The cause can be the cable, the port, the on-board charger or the station. We separate them by testing, not by replacing parts in turn.
The 12 V battery keeps going flat
Electrified cars charge the 12 V battery from the main battery, through the DC-DC converter. If it keeps going flat, we check the converter, not just the battery.
Frequently asked questions about Mercedes hybrids and EVs
Do you work on Mercedes hybrids and electric cars?+
Yes, on the common electrified Mercedes models. When you book, we confirm from the VIN what we can do on your car.
Can you check the battery’s condition?+
Yes. We test the battery before any replacement quote and tell you what we found and what options you have.
Is it cheaper than a dealer?+
Often, yes, because we repair only what is faulty rather than replacing whole assemblies. If the car is still under the manufacturer’s warranty or has an open recall, we tell you to go to a dealer first, where the fix is free.
How long does it take?+
It varies from case to case: it depends on the model, the fault and the parts. We give you an estimate after talking through the symptoms or after the diagnosis.
Find out what is wrong with your Mercedes
Book a check. We tell you the cause and whether the next step is the battery, the charging or maintenance.