EVC Research & Development

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Author: Strom Trooper

EQC ZF eDrive repetative failure – SiC seal wrong technology

By Strom Trooper

Front Drive Unit Failure – Mercedes EQC We are once again seeing the same repeating failure pattern on ZF asynchronous induction motors: coolant intrusion through the SiC mechanical seal. Although induction motors are, by design, more durable and more sustainable than PMSM units (in terms of serviceability and long-term stability), several OEMs (Audi, VW, Mercedes)…

If you drive a hybrid – may God help you – NOT REPAIRABLE

By Strom Trooper

If you drive a hybrid – may God help you – NOT REPAIRABLE This is our final warning: unless you own a diamond mine, an oil rig in Kuwait, a chain of gas stations, or a Vaseline factory – do not buy used hybrids with more than 100,000 km. You are entirely dependent on purchasing…

The Yellow Dotted Line on Tesla’s Dashboard – What It Really Means

By Strom Trooper

One of the most common questions we receive after battery repairs is about the yellow dotted line on the energy display. Many owners worry that this indicates a defect or a problem with the repair. In reality, this feature is a normal part of Tesla’s battery management system (BMS), designed to protect and optimize the…

Tesla SDU Diff Gear Rebuilding – Halfshaft rattling solved

By Strom Trooper

Dear Tesla community : Making the Small Drive Unit immortal wasn’t easy – but it also wasn’t impossible. Simply buying existing repair kits is not enough because milling or clicking noise was still there. The clicking noise and axle vibrations we noticed on an SDU we received over two years ago seemed like an isolated…

We need this BMS to save customer €14,000!

By Strom Trooper

Did you know that if the BMS fails on a Fiat 500e, you have to discard 500 kg of perfectly healthy lithium and buy a whole new battery pack for €14,000? That’s because the OEM doesn’t sell the BMS separately — a practical example of how manufacturers make EVs unsustainable, almost deliberately. Part numbers we…

Ferrari LaFerrari hybrid battery pack defect cost 200,000€

By Strom Trooper

 Ferrari LaFerrari F150 hybrid battery pack undergoing in-depth analysis and documentation at EV Clinic. Can we help the owner avoid spending €180,000 on a new pack?After intensive several days of troubleshooting and indepth diagnosis we found 2 faults, one of them was manufacturing assembly defect and second cell defect.Car had only 1440 km on the…