- Engine / equipment
- Mercedes EQA, EQB (243), EQE and EQS electric
- Period mentioned
- 2022–2023
- Symptoms
- When reversing very slowly (below about 6 km/h) a squeal comes from the drive unit; it does not happen going forwards.
- Possible cause described
- According to Mercedes-Benz bulletin LI08.10-P-075764 (January 2023), a seal separating the coolant circuit from the electric motor is wetted with coolant when driving forwards; when the direction of rotation changes slowly it may stay dry and squeal (the “stick-slip” effect). It does not affect the function or durability of the seal or the motor.
- Check for the garage
- If the squeal only happens when reversing slowly, with no warnings and no loss of power, the bulletin says no part should be replaced. If there are warning lights, coolant loss or noise going forwards too, have the garage check it.
- Cost cited in the source
- No cost: nothing needs repairing.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Mercedes-Benz
Squeal from the electric motor when reversing slowly (EQA, EQB, EQE and EQS): normal, no parts to replace
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No cost: nothing needs repairing.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
If the squeal only happens when reversing slowly, with no warnings and no loss of power, the bulletin says no part should be replaced. If there are warning lights, coolant loss or noise going forwards too, have the garage check it.
What are the symptoms?
When reversing very slowly (below about 6 km/h) a squeal comes from the drive unit; it does not happen going forwards.
Which cars and years does it affect?
- Brands
- Mercedes-Benz
- Engine / equipment
- Mercedes EQA, EQB (243), EQE and EQS electric
- Period mentioned
- 2022–2023
Taking it to a garage?
Models with this entry
Other entries for these makes
- Several warnings at once in the instrument cluster when switching on or pre-conditioning while plugged in: rear motor electronics (EQA and EQB 4MATIC, P061AE9)Mercedes-Benz
- Recall: unnecessary battery contactor openingMercedes-Benz
- Recall: CLA rear-drive electronicsMercedes-Benz
- Chain, injectors and coolant leaksMercedes-Benz · Jeep
- Oil cooler and injector leaksMercedes-Benz · Chrysler · Jeep
- 7G-Tronic conductor plateMercedes-Benz
Something not right on this page?