Mr. Clarence’s BMW 520i had vibration during cold start and also while driving. We performed both Engine and Gearbox mounting
![BMW Case Study 5: 520i Engine/ Gearbox Mounting, BMW Battery](https://www.revol.com.sg/wp-content/uploads/2020/04/image24-3.jpg)
Our BMW specialist hoisted the car and checked the usual gear box and engine mounting.
![](https://www.revol.com.sg/wp-content/uploads/2020/04/image25-3.jpg)
Replaced the sinked engine mounting.
![BMW Case Study 5: 520i Engine/ Gearbox Mounting, BMW Battery](https://www.revol.com.sg/wp-content/uploads/2020/04/image26-3.jpg)
And the worn gearbox mounting.
![](https://www.revol.com.sg/wp-content/uploads/2020/04/image27-3.jpg)
As Clarence car is reaching a 5 years mark hence battery replacement is done as well to prevent the car not able to start.
![BMW Case Study 5: 520i Engine/ Gearbox Mounting, BMW Battery](https://www.revol.com.sg/wp-content/uploads/2020/04/image28-3.jpg)
Always take note it is a MUST to perform an IBS registration after battery change to ensure the algorithm is being reset back to optimal charging voltage for the specified battery to prevent overcharging.