Heat Exchanger for BMW i7 — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: Medium | Replacement Cost in India: ₹30,000–₹1,00,000
What is the Heat Exchanger?
The heat exchanger transfers heat between coolant circuits to regulate battery and motor temperature.
How the Heat Exchanger Works
It allows heat transfer between fluids without mixing them.
Why the Heat Exchanger is Important
Ensures optimal thermal efficiency of EV components.
Common Problems with the Heat Exchanger
- Clogging
- Leaks
- Reduced efficiency
Warning Symptoms of a Failing Heat Exchanger
- Overheating
- Poor cooling performance
Common Causes of Heat Exchanger Failure
- Coolant contamination
- Corrosion
Impact on Car Performance
Inefficient heat exchange can lead to overheating of critical components.
DIY Fix Guide — Step by Step
- Inspect coolant quality
- Check for leaks
Maintenance Tips
- Flush coolant periodically
Heat Exchanger Replacement Cost in India
Expect to pay between ₹30,000 and ₹1,00,000 for genuine parts plus labour at an authorised BMW workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy Heat Exchanger Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Heat Exchanger listings.
When to Replace the Heat Exchanger
Replace when cooling efficiency drops significantly.