Specialized Mercedes EQ Repair & Diagnostics — Dubai
Need Mercedes EQ repair in Dubai? We handle EQC · EQE · EQS with high-voltage diagnostics, battery & BMS service, inverter/charger repairs, and Xentry Online updates — factory-level care for your luxury EV.
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High-Voltage Battery & BMS Cell balance checks, insulation test, contactors & pre-charge; Mercedes EQ battery service Dubai.
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On-Board Charger & DC Fast OBC faults, charge port issues, HVIL, latch sensors — tested and repaired with OEM procedures.
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Thermal Management Coolant loops, battery chiller, electric water pumps — stable temps for UAE summers.
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Software · Xentry Online · SCN ECU updates, calibrations, ADAS resets, HV safety clearances with dealer-level tooling.
Your Mercedes
Mercedes EQ High Voltage Battery & Cooling – Repair in Dubai
When your cluster or dashboard shows messages like “High Voltage Battery Malfunction”, “Stop vehicle – Drive not possible”, or “Electrical system – Visit workshop”, the car is going into self-protection mode. The car reduces power on purpose to prevent fire, HV short, or permanent cell damage.
Real cases we see every week (Dubai / Sharjah):
- EQC / EQE / EQS / GLE Plug-in will not charge, or charging stops after a few seconds.
- Massive instant range drop (suddenly very low km).
- Cooling fans / HV battery pumps always running with a sharp electric noise.
- “Reduced Power” after heat soak in Dubai traffic.
Most garages jump to “full battery pack replacement”. That’s the most expensive answer, and many times it is not needed.
What we actually do at MBCOD:
- We read real Mercedes data with Star / Xentry – not a cheap universal OBD.
- We pinpoint the fault: cell group, BMS board, HV contactor, coolant pump, blocked cooling loop, isolation leak.
- We tell you clearly if the car is safe to move or it must stay parked right now.
- We explain in simple language why the warning came and what to do next.
If needed, we isolate and repair / replace the damaged module or BMS board, instead of “full pack only”. That’s how you save serious money.
SEO / human: “Mercedes EQ battery repair Dubai”, “EQC high voltage cooling fix UAE”. People search this when they panic.
High Voltage Battery Help (WhatsApp)
Mercedes Hybrid Drivetrain Malfunction / Not Charging
Typical messages include: “Drivetrain Malfunction”, “Hybrid system not available”, “Electric drive disabled”, “Can’t engage gear / won’t start”.
Most common root causes we see in Dubai / Sharjah:
- Inverter or DC/DC converter is overheating or starting to fail.
- HV contactor / high-current relay did not close correctly or welded shut.
- HV isolation fault (moisture / coolant contamination in the high-voltage path).
Your first question is always: “Can I still drive or will I kill something expensive?” Use this quick guide:
| Warning you see | What it usually means | Can I drive? |
|---|---|---|
| “Drive Not Possible” / car will not go in gear | HV system refused to enable torque. Could be isolation risk or a welded contactor. The car is actively protecting itself (and you). | NO. Do not force-start. We send mobile diagnostic. |
| “Electric drive disabled” but petrol/ICE engine still runs | E-motor or inverter is too hot, or coolant flow is weak. The car limited electric drive. | Short distance is usually OK. Come to us ASAP. |
| “Hybrid system not available”, car still moves slowly | System logged a thermal / voltage protection event and reduced torque. Very common after the car sits in Dubai heat. | Gentle driving only. No hard acceleration. |
| Car refuses to charge AND refuses to start | Possible HV leak to chassis (high-voltage isolation fault). The car locks itself for safety. | NO. High-voltage safety risk. We come on-site. |
We provide mobile diagnostic in Dubai & Sharjah. You do not have to sit in 45°C heat waiting for a tow truck. We come to you, read the real Mercedes data, and tell you: is this a true high-voltage danger, or just a temporary protection mode.
Very important: if you clear the fault yourself with a cheap OBD tool, you delete the original freeze frame and event log. Later, for insurance, warranty or claim, you have zero proof. We always capture and save the original fault log before any reset, so you have documented evidence.
Hybrid / Plug-In Fault? Send Location
On-Site Mercedes EQ / Hybrid Diagnostic in Dubai & Sharjah (Same Day)
Why only these platforms? Because our tools (Mercedes Star / Xentry), cables and high-voltage procedures are built specifically for these cars. We are not a universal garage guessing on high-voltage safety.
What we do on-site:
- Full fault code read & documentation for Drive / HV Battery / Inverter / Charging / Cooling Pump modules.
- High-voltage isolation health check (we verify if there is any HV leak to chassis).
- On-board charger (OBC) and charge port status check.
- Clear answer: “safe to drive” or “tow required”, in normal human language.
If the car is still considered safe, we can give you a temporary safe-drive procedure so you can reach our workshop instead of standing on the roadside in 45°C waiting for a recovery truck.
Same-day Mercedes EQ / Hybrid diagnostic. Mobile technician available in Dubai / Sharjah.
That exact wording hits both human trust and local SEO: “same-day”, “Mercedes EQ”, “Hybrid diagnostic”, “Dubai”.
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High Voltage Cooling & Preventive Service for Mercedes EQ / Plug-in Hybrid
When coolant gets weak, dirty, aerated or the pump is getting tired:
- The car goes into “Reduced Power”.
- The high-voltage battery gets stressed and degrades faster.
- Charging becomes slow or stops completely.
- Fake “electrical” error messages appear that are actually thermal problems.
Our preventive high-voltage service includes:
- HV cooling loop inspection (pump flow, coolant quality, blockages, air pockets).
- Scan of active, stored and historic thermal events (not just current fault codes).
- Pack voltage health and cell balance check.
- High-voltage wiring visual inspection (abrasion, moisture, corrosion, isolation risk).
We say it exactly like this because it’s true and customers get it: Preventive high voltage cooling service can save your Mercedes EQ / Plug-in Hybrid battery from early degradation and $$$ replacement.
| What we check | Why it matters | Result for you |
|---|---|---|
| HV coolant loop (pump flow, leaks, air pockets) | Weak coolant flow = inverter / e-motor overheats and triggers “Reduced Power”. | Keep full performance longer, even in peak Dubai summer. |
| Battery module temps & cell balance | Large temperature difference between cells accelerates battery degradation. | Early warning before $$$ high-voltage pack replacement. |
| On-board charger (OBC) thermal history | A hot OBC = slow charging or charge abort after 10 seconds. | Avoid surprise “not charging” at a public charger. |
| HV wiring & isolation health | Moisture or insulation damage can trigger an isolation fault and immobilize the car. | If high-voltage risk is detected, we tell you not to drive until secured. |
Mercedes EQ and Hybrid Service in Dubai – High-Voltage Experts You Can Trust
Electric and hybrid Mercedes models are not just “normal cars with a big battery”. They use high-voltage systems, complex power electronics and smart energy management that require specialist knowledge and tools. At MBCOD we provide complete Mercedes EQ and hybrid service in Dubai, from routine maintenance and software updates to advanced troubleshooting of high-voltage faults. Our focus is on German brands such as Mercedes-Benz EQ, EQE, EQS, GLC and S-Class plug-in hybrids, as well as BMW, Audi and Porsche hybrid systems, so you always deal with a team that truly understands these platforms.
Most problems on EQ and hybrid cars start quietly: reduced electric range, slow charging, fans running constantly, warning messages like “Hybrid system malfunction”, “Electric drive not available” or the car refusing to start after a night on the charger. Many workshops only see the high-voltage battery and immediately recommend a complete replacement. Our approach is different. We combine deep experience in electronic ECU repair with factory-level diagnostics to isolate whether the real issue is inside the battery modules, the inverter, DC-DC converter, charging unit, or simply a low-voltage wiring or software problem.
Every EQ or hybrid vehicle that enters our workshop goes through a structured process. First we perform a full scan of all control units, read manufacturer-specific fault codes and check live data under different loads. We verify insulation resistance, cell balance, temperature sensors and contactor operation according to OEM procedures. This step is critical, because guessing on a high-voltage system can be dangerous. Only after we have clear data do we recommend the correct plan – whether it is a software update, HV battery refurbishment, cooling system repair or replacement of a single electronic module.
Safety is at the center of everything we do. High-voltage systems in Mercedes EQ and hybrid models operate at up to 400–800 V. Our technicians are trained to work with insulated tools, lock-out procedures and personal protective equipment. The vehicle is placed in a dedicated high-voltage bay, the system is safely discharged and isolated, and only then do we open connectors or battery covers. This protects both your car and our team, and ensures that every repair follows best practice rather than risky shortcuts.
One of the key advantages of our Mercedes EQ and hybrid service in Dubai is that we look at the entire energy chain, not just the battery pack. Many “battery problems” are actually caused by weak 12 V systems, damaged charging sockets, coolant leaks into the battery, or outdated software in the power electronics. Because MBCOD is a specialist in German electronics, we can test and repair inverters, on-board chargers and control modules on the bench instead of replacing them blindly. This often saves the customer thousands of dirhams while restoring full performance and reliability.
Regular maintenance is also critical for the long-term health of EQ and hybrid vehicles. We check and replace HV battery coolant where applicable, verify the condition of orange high-voltage cables, test charging performance on AC and DC, and review driving data to detect early signs of degradation. For plug-in hybrids that spend a lot of time in hot UAE conditions, we advise on the best charging habits and update the software so that thermal management works optimally in real Dubai traffic, not just in European test cycles.
If you are not sure whether the problem is electric, mechanical or software-related, we recommend starting with a quick Mercedes diagnostic in Dubai session at our workshop. This allows us to build a clear picture: engine, gearbox, high-voltage battery, inverter and charging system all checked in a single visit. Based on this report we can give you an honest comparison between repair, refurbishment and replacement options, including estimated cost and downtime for each path.
Our clients include daily-driven EQ models, luxury S-Class plug-in limousines and high-performance AMG hybrids that cannot afford extended downtime. For fleet operators, ride-hailing drivers and car-rental companies we offer priority appointments, remote support and transparent reporting so you always know the real condition of your high-voltage assets. Whether your car has lost range, shows a hybrid malfunction message or simply needs specialist service before a long trip, MBCOD is ready to help.
By focusing on Mercedes EQ and hybrid service in Dubai, we bridge the gap between the high prices of main dealers and the uncertainty of general garages. You get clear diagnostics, safe high-voltage handling and repair options that protect both your wallet and your battery. Send us your VIN, model, year and a short description of the problem on WhatsApp and our team will guide you step-by-step to the best solution for your EQ or hybrid vehicle.