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Discussion Starter · #1 ·
The backup/reverse lights suddenly are not working on my 2009 Ford Escape.

Both bulbs have been checked and are good.

The 10 amp fuse in #35 fuse holder is good.

After much Google searching I cannot find the location of the reverse sensor switch. I presume it is on the transmission but exactly where and hopefully can be reached and tested from engine compartment.

Can someone please post a photo or schematic of where this switch is located.

Thanks for any advice.

Can
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The PCM activates a relay for the back up lamps from a signal from the transmission range selector
You might look at the relay in the battery junction box.
See wiring diagram below that came from the wiring diagram of a similar vehicle
Here is the manual. Costs $12
2009 Ford Escape Mercury Mariner Wiring Diagrams Manual | eBay

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A quick way to make a function test is ....

Many of the relays in the battery junction box are the same. (Pull and look at pin pattern)
If that is the case you can swap a relay for a different function to the reversing lamp circuit and see if the lamps then work.

After the swap if the lamps come on you will know that the relay is the issue. Get a new relay.

A longer term thing would be to spend the twelve bucks and get the wiring diagram

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Discussion Starter · #5 ·
That was what I was hoping to do, i.e. switch out an existing relay.

My vehicle is being used by my grandson so I will need to catch up to him. He says it is brutal trying to back out of their multi vehicle driveway at night so I better get on this.

Thank you, I will post what I find.

Brian
Kitchener, Ontario, Canada
 

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Discussion Starter · #6 ·
Switched out the relays today and unfortunately no reverse lights.

Both bulbs are good, 10 amp fuse is good and relay is good also.

I guess that leaves the Transmission Range Sensor to be checked which looks to need a hoist so will have that checked as soon as I can book a service appointment. The 2009 Escape has never had a coolant flush and exchange so the time is right.
 

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The same for an automatic transmission fluid drain and refill. If your ride has over 100,000 miles it would be time to replace all of the oxygen sensors too.

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