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I have a bmw 2005 5 series m-sport touring and the central locking has stoped working off the keys but the central
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Customer: i have a bmw 2005 5 series m-sport touring and the central locking has stoped working off the keys but the central locking still works if you put the key in the door but when you open it the alarm goes off.Does anyone know where the transponder is and could it be this thanks gareth
Answered by UK_Tech in 17 mins 12 years ago
UK_Tech
Auto Mechanic
334 satisfied customers
Specialities include: Automotive Mechanic, Small Engine Repairs, Auto Body Repairs, Diesel Engine Repairs
Hi,
this is an extremely common problem! The key signal is received by the rear screen and passed to a small control unit located underneath the rear spoiler. These control units are contained within a small plastic box which was very poorly sealed from the elements. It is very likely that water has managed to enter the box and damage the control unit. You will have to rear the plastic rear spoiler to gain access to it and confirm this.
Rich.
It may also be worth noting that if the ECU is wet it will require replacement but the box will require thoroughly sealing after fitment to prevent further issues.
Rich.
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