Electrical Faults

Vehicles are brought to us every day of the week with immobiliser problems and our experts have many years experience diagnosing the problem and fixing it in the most cost effective way.
Our specialists have many years experience diagnosing problems and overcoming the issues that have caused them. The type of issues we can diagnose and fix range from airbag, abs, alarm and immobiliser issues, burned out wires and looms and many more.



Immobiliser Problems

Immobiliser problems are caused by a range of issues including key fobs which have lost their coding or with lost transducer chips, damaged or corroded wiring, faulty ECUs, CAN bus errors, faulty sensors and actuators, corrupted body ECUs, faulty BSI Units and damaged receiver rings.


Common Problems:

  • Central Locking not working
  • Alarm not Working
  • Car Won’t start – Immobiliser Light On
  • Car Won’t Start – Immobiliser Light Flashing
  • Car Won’t Start – Immobiliser Light Off, Car Starts Then Stops


ABS or Traction Control

If your ABS or Traction Control light does not go off within a few moments of driving you should always get the car to a specialist as soon as possible to have the problem diagnosed and fixed.


Common ABS problems are caused by faulty batteries, failed wiring or connectors, broken brake light switches and broken brake light bulbs.


As well as the danger that this poses for you, your passengers and other road users and pedestrians, your insurance will be invalid in this light is on at the time of an accident.



Engine Management Problems

We are experts in correctly diagnosing and fixing engine management problems.
Our diagnostic equipment allows us to pinpoint faults, even when main dealers have failed to do it. A number of main dealers in this area bring any engine management problems to us without trying to find and fix the problem themselves as it is more cost-effective for them to pay us for a correct diagnosis.



Airbag & SRS Problems

Most airbag and SRS faults are caused by bad connections and damaged wires. These types of faults can be notoriously difficult to diagnose without access to the correct specialist equipment which we have at Halls. This equipment helps us to quickly identify the area of the car that is causing a problem.


One of the most common problems is caused by adjusting the seats in a car. The wiring for airbags and SRS systems is generally thin and stiffens with age. When seats are adjusted it is common for the wires to break or for connectors to be pulled apart.


We have a lot experience with the common faults which enables us to produce significant savings for our customers.


Warning : Your insurance is unlikely to be valid if an airbag warning light is showing, so if you are involved in an accident you will not receive a payout from your insurers.
Airbags contain sensitive and volatile explosives. Please do not attempt to work on or even disconnect any wires or connectors related to the airbag SRS system. Disconnecting a connector can result in activation and personal injury as well as damage to the seats, dashboard or other parts of the vehicle. Disconnecting the battery is not enough to avoid these dangers.



Body Control Systems

The majority of cars manufactured on the roads today have one or more Body Control modules which perform all sorts of functions, such as control the lighting components on the your vehicle.


Gone are the days when you push a switch that completes an electrical circuit to open a window. These days it is more likely that pushing a switch sends a signal through your car’s Can Bus Network to the Body Control Ecu which then sends a signal to the window control motor which then opens the window.


The reason for this is that it allows such things as automatic window closure when you lock or alarm the car.


The problem is that while all this extra functionality may seem like a good idea when everything is new, but the increase of extra control components within a vehicle environment also greatly increases the chances of  errors and faults to occur. But with the aid of dealer level equipment these faults can be remedied quickly and cost effectively.




When there is a problem with your vehicle which affects emissions, it will automatically disable certain features to prevent any major problems, putting the vehicle into “limp mode.”

You will notice a loss of power when your vehicle is in limp mode. Our expertise enables us to determine which component is at fault, or if there is a wiring issue, and fix the emissions problem, saving you the time and money involved in replacing parts and systems which are not actually broken.

Enquire Now
    • "Hills Waste Solutions has a 10 year working relationship with Halls Electrical and has been fitting Brigade 4 camera MDR system with GPS and a 4 sensor sidescan( including turn left and low speed trigger) to all our new vehicles since 2014.   The fitting of this recordable camera equipment provides essential safety benefits for vulnerable road users particularly when vehicles perform left turns. In addition it has proven to be beneficial when processing insurance claims as it provides a factual record of any alleged incident.   Halls Electrical provide Hills Waste Solutions with an efficient service and a ‘can do’ attitude coupled with reliable workmanship."
      Nathan Carr (Depot Manager)
      Hills Waste Solutions
    • "Mercedes Benz UK Limited, have used the services of Halls Electrical Ltd for the last 5 years or so. During this time we have found there service to be extremely professional to our standard of work, reliable, and efficient in the way they have conducted their business.   Our core business is the preparation of used commercial vehicles for resale, and approximately 1000 new commercials.   We have upwards of 5000 vehicles per annum through our workshops, with occasional demand for Subcontractors.   Halls Electrical Ltd has worked with us very closely with the preparation of our new commercial business to the point that they are registered on our COP with the VCA.   When carrying out work on our premises, the employees of Halls Electrical Ltd adhere to all the correct H&S procedures relevant to there works and our environmental policy.   The invoicing is always on time, and correct first time.   I have no hesitation at all, in recommending Halls Electrical Ltd, to carry out work for any company.  "
      Peter Colbridge MIMI AMIRTE AMSOE (Workshop Operations Manager)
      Mercedes Benz UK Ltd
    • "I manage a department that is responsible for providing emergency responses to elderly and vulnerable people that live within the Swindon Borough Council geographical area.A team of Homeline Response Officers are on call 24/7 and use high livery on their vehicles to let people know that we are there. We are the only community alarms providers in the country to have use of the bus lanes for responding to emergencies; we also carry life saving equipment such as defibrillators, time matters! We asked Halls electrical to provide us with appropriate bar lights and high specification markings. We were absolutely delighted with the quotations given. Great value and exceptional workmanship with fantastic communication throughout the process. Highly recommended."
      Jack Sharpe (Principal Homeline & Telecare Officer)
      Swindon Borough Council
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