DB9 Top Gear Track
AO Silver Member
Join Date: Jan 2007
Location: United Kingdom
County: East Sussex
The sensor is installed from the back of the bumper and is a bayonet fixing to the holder installed from the front, there is a spring over the the body of the sensor to keep tension on it. It may be either the sensor or holder that has broken. Is the holder still in the bumper?
If it is it should just pull out if the sensor has fallen inside. However you may have lost the spring and/or holder but all are available as separate spares. Bear in mind all 4 holders have different part numbers.
I don't think you need to remove the bumper to replace any of them, I replaced the inner offside when it packed up without removing the bumper, the other 3 looked to be accessible.
Lie under the bumper reach up with one hand at the back of the bumper and the other hand on the outside, holder and sensor in either hand, push together and twist.
All the best
Loose - not close, compact, or tight in structure or arrangement
Lose - to part with or come to be without, as through theft, accident, negligence, etc.