Vauxhall Zafira


This came from another garage which couldn’t sort it. Vehicle had no central locking and heated rear screen was on all the time, electric windows worked even with ignition off.

Firstly we found broken shorted wiring


With the wiring repaired heated rear screen worked fine but other problems remained.

With us finding shorted wiring there is always a chance that control modules could be damaged. With correct wiring diagrams and module locations we traced a fault back to the central locking control module, a quick examination of the module revealed extensive damage



2006 Renault Scenic


A lot of heater blower issues in this time of year. This vehicles blower was open circuit. Also the speed Control module was burnt along with the plug. Access to all these parts is difficult,the easiest way is to remove the dashboard completely


With the dashboard removed the wiring could be repaired correctly and motor and module fitted securely.


Mercedes slk

dsc_1359The passenger door had issues with the window and central locking inoperative. We had no communication with the door module. We stripped the door down and gained access to the module, checked all grounds and feeds all OK. We also scoped the communication connections and found these to be good. The module was removed and checked


The module had signs of water ingress.

A new unit was sourced and then had to be coded in


2009 Renault Scenic


Into our workshop was this Renault with heaterblower trouble. Access to the motor is terrible on these cars. With the glove box and heater ducting on the passenger side removed and the full steering column removed on the drivers side you can see the motor



Although you can see the motor you still can’t get at the wiring. For that you need a special tool to twist and unlock the motor and small hands to get inside the ducting and release the plug onto the motor.

A tough job that we are experienced at here at Widnes Auto Electrical.

2013 Audi A3 Blower inoperative


The vehicle was brought in with no Blower. We stripped the dashboard to gain access to the motor and control module


The motor was found to be open circuit which would normally mean a new unit. But hear at Widnes Auto Electrical we are experts at repairing electrical motors for various applications.


The motor was stripped and repaired saving the customer over £175 against a replacement unit.


Mercedes SLK


This Mercedes came in for an electric roof conversion. Normally you would have to sit in the car and hold the roof switch till the roof cycle was complete. With this conversion the process becomes one touch from the keyfob.


Once fitted you can download and adjust settings,even allow the roof to open whilst the car is moving!

Fiat Punto


This vehicle came in with intermittent heavy steering when turning the steering wheel to the left.


A quick diagnostic code read revealed a problem with the torque sensor. This device is inside the power steering unit.


With the column stripped it was confirmed as faulty and a new unit sourced


Once fitted and test driven, all fault codes cleared and the car drove great.




This C-class came in with air con issues. With our machine connected the pressures were noted and found to be around the normal 10bar on the high side but nearly 0bar on the low. The high side pressures proved the compressor was pumping. The low side pressures suggested that there was a blockage. Through experience we have found the usual place for blockages would be the receiver/dryer or the expansion valve. The valve was removed which was situated at the back of the engine



With the valve removed and examined you could see the valve was stuck closed



With the valve fitted and the system charged the pressures were perfect



And the temperature was perfect




In this week was this BMW with indicator trouble. The indicators were flashing fast on both sides as if a bulb was blown,  all bulbs were OK.


Using Autologic diagnostic equipment it showed a fault relating to the footwell module, which controls aswell as other systems all external lights. DSC_0682

Again using diagnostic equipment we can do a reset on this module which alot of the time can cure the fault. But after doing this the fault remained.


So we stripped the car to gain access to the module and quickly checked all connections to the module, again all was Ok.

The BMW dealer was phoned where we were informed that they had sold 67 of these last month!  Ours will have to come from Germany as all stock in UK sold out. Once the part arrives it will need coding in.  Job done!

2009 Mercedes cls 320

Into our workshop this week was this Merc with parking assist problems and automatic door lock/unlock not working.  A full serial scan showed up 2 faulty parking sensors on the front. A check of these sensors confirmed the fault and 2 new sensors sourced.


Next we checked the locking system, the normal way it should work is as long as you have the keys on you when you approach the car when you pull the handle on the door it should unlock for you. We stripped the drivers door down and removed the door handle that contains a microswitch that unlocks the door and found water ingress into the switch.