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Lion Yard Trading
Mercedes-Benz · Electric Drive

Chiller and heat exchanger

The exchanger that lets the air conditioning circuit actively cool the battery coolant — the thing that keeps a pack usable in this climate.

Also called battery chiller.

How you know it is this

  • Rapid charging slowing dramatically in hot weather
  • Battery temperature warnings
  • Reduced performance after sustained hard driving
  • Coolant and refrigerant mixing — a failed exchanger

Worth knowing before you buy

  • THIS IS THE PART THAT MATTERS MOST IN A GULF SUMMER. Without active chilling the pack heats up, the car cuts charging speed and power to protect it, and long-term degradation accelerates.
  • Reduced rapid-charge speed in hot weather is normal to a point. A car that has got dramatically worse is not.
  • An internal failure mixes refrigerant and coolant, which contaminates both circuits and means flushing as well as parts.

What we need to quote it. The chassis number and the fault codes. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

Electric coolant pumpsExpansion tanks and linesChiller / heat exchangerHeat pump and valvesHV cabin heater
EV thermal management — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the thermal management

All electric drive parts
Get in touch

Chiller and heat exchanger for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)