Automotive Terms And Abbreviations- R

R12- Refrigerant-12
 
R134a- Refrigerant-134a
 
RAM- Random Access Memory, Non-permanent memory device, memory contents are lost when power is removed.
 
RAP- Retained Accessory Power
 
RAV- Remote Activation Verification
 
RCDLR- Remote Control Door Lock Receiver
 
RDCM- Right Door Control Module
 
Ref- Reference
 
Rev- Reverse
 
RIM- Rear Integration Module
 
RF- Right Front, Radio Frequency
 
RFA- Remote Function Actuation
 
RFI- Radio Frequency Interference
 
RH- Right Hand
 
RKE- Remote Keyless Entry
 
Rly- Relay
 
ROM- Read Only Memory, Permanent memory device, memory contents are retained when power is removed.
 
RPM- Revolutions per Minute Engine Speed
 
RPO- Regular Production Option
 
RR- Right Rear
 
RSS- Road Sensing Suspension
 
RTD- Real Time Damping
 
RT- Right
 
RTV- Room Temperature Vulcanizing Sealer
 
RWAL- Rear Wheel Antilock
 
RWD- Rear Wheel Drive