VOLVO
AEM-4F62 - Back-up (reversing) warning system, buzzer. Signal too low. Permanent fault
System
Accessory Electronic Module (AEM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (4)
What does this fault code mean?
The AEM has registered a signal that is too low on the buzzer wire of the reversing warning system while reverse gear is not selected. The fault is permanent, and the reversing buzzer does not work. The cause is usually a short to ground in the buzzer wire or a faulty buzzer.
Possible causes
- Buzzer wire from the reversing warning system shorted to ground
- Faulty reversing warning buzzer
What you can do
- 1Look for chafing or damage on the buzzer wire
- 2Check the buzzer connector for oxidation and loose connections
- 3Check whether the buzzer sounds when reverse gear is selected
- 4If the fault remains, have a workshop replace the buzzer after the wiring has been checked
Symptoms you may notice1
- Reversing warning system does not work
What the fault can affect1
- The reversing warning system is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.