SOURCE: I have the proper code
The radio has a yellow wire that goes to a constant hot.This is for your memory and clock. you need to hook it up to your fuse box battery side.
SOURCE: why is restricted perfomance light on in 2005 jaguar vandenplas
Many things can cause resricted performance..I have a vanden plas and a xjr...and I have seen many things cause it from knock sensors, to water being sprayed on the engine or short circuiting throttle body sensors etc...the 1st thing you must do is have the code read that is causing the restricted performance ...let me know.
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