How you know it is this
- An isolation fault, sometimes with the car refusing to drive or charge
- A fault that appears in the wet and clears when dry
- A high-voltage warning after a coolant leak or water ingress
Worth knowing before you buy
- AN ISOLATION FAULT IS A SAFETY WARNING, not a nuisance code. It means the system may no longer be isolated from the bodywork and it should be investigated rather than cleared.
- A fault that comes in the wet and goes when dry is genuine and usually points at a specific component with a failing seal.
- The monitor itself rarely fails. It is normally reporting something real — coolant in a component, a damaged cable screen, or moisture in a connector.
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.
Rest of the high-voltage distribution
Get in touch
Insulation monitoring sensor 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)