Modern Garage Services Including ECU Programming & Diagnostics in Cobham & Esher | Hersham Service Station

One of the key characteristics of a progressive garage is a willingness to invest in the latest, most sophisticated automotive equipment on the market. A fully-equipped modern workshop enables technicians to offer advanced garage services such as ECU programming, in addition to on-board diagnostics (OBD).

Walton-on-Thames based Hersham Service Station extends these services to clients in nearby areas including Cobham, East Molesey, Esher, Molesey, West Molesey and Weybridge. Below, we’ve looked to provide some detail on the ins and outs of ECU programming, which is also commonly known as ECU coding or control module programming, as well as OBD. To book in for either, simply call our friendly team on 01932 229 022.

ECU Programming

ECU programming, or control module programming, is the process of modifying the software in a vehicle's engine control unit (ECU) to optimise performance, fuel efficiency, and other modifiable parameters. The ECU is a vital component in modern vehicles that controls many aspects of the engine's operation, including fuel injection and ignition timing.

We achieve this through the use of specialised equipment, which allows to precisely tune the engine's parameters to achieve specific performance goals. This can result in improved horsepower and torque, better fuel economy, and smoother engine operation. It’s our goal to help motorists around Cobham, East Molesey, Esher, Molesey, West Molesey and Weybridge to tailor their driving experience to their needs and tastes, overcoming the limitations of generic, straight off-the-assembly-line coding.

Another benefit of ECU programming / control module programming is that it can be used to remove restrictions imposed by factory settings, giving the vehicle more power and performance capabilities. This is especially beneficial for performance enthusiasts who want to customise and optimise their vehicles.


On-board diagnostics (OBD) is a modern alternative to traditional, hands-on investigation which can often prove time-consuming and occasionally inaccurate. This form of diagnostics sees our technicians access a system built into modern vehicles to monitor and report on the performance of various vehicle components. OBD systems use sensors to track parameters such as engine speed, air flow, and fuel injection to identify potential issues or malfunctions. When a problem is detected, the system generates a code that is stored in the vehicle's computer.

This code can then be read using a diagnostic tool, allowing technicians to identify the root cause of the problem and make necessary repairs. OBD systems are a key tool for maintaining vehicle performance and safety, as they provide real-time data on vehicle operation and allow for proactive maintenance and repairs. Ultimately, this approach saves Cobham, East Molesey, Esher, Molesey, West Molesey and Weybridge motorists both time and money, and ensures they get back safely on the road with the required repairs taken care of.

Just as Hersham Service Station is passionate about delivering an unrivalled standard of ECU programming (control module programming) and on-board diagnostics, we insist on using OEM parts for repairs on all the following marquees:

  • Ford
  • VW
  • Siat
  • Audi
  • Skoda
  • BMW
  • Jaguar
  • Landrover
  • Vauxhall

Improve performance with ECU programming, or get to the bottom of lingering issues with on-board diagnostics. Visit Hersham Service Centre, located a short drive from areas including Cobham and Esher.