Al­ter­na­tor re­place­ment

Car Mechanics (UK) - - Help! -

My Re­nault Me­gane 1.5 dci has an al­ter­na­tor prob­lem and the bat­tery light il­lu­mi­nates on the dash­board. The trou­ble is I don’t know the ra­dio code. Would there be any prob­lems if I changed the al­ter­na­tor without dis­con­nect­ing the bat­tery? Gino

There would be no prob­lems caused to the al­ter­na­tor or charg­ing sys­tem by re­plac­ing the unit without dis­con­nect­ing the bat­tery, but the dan­ger of short­ing out the main feed wire to earth while car­ry­ing out the job would be very high. Short­ing out the feed ca­ble to earth would cause se­ri­ous prob­lems and could be very dan­ger­ous.

The al­ter­na­tive would be to use a fused bat­tery saver de­vice. Al­though you would still lose the ra­dio code if you were to ac­ci­dently touch the ca­ble to earth, at least you would not be at risk of more se­ri­ous dan­ger.

You should be able to get the ra­dio code from your near­est Re­nault main dealer. They nor­mally re­quire the V5 as proof of own­er­ship and some will charge for the ser­vice.

There are also com­pa­nies on­line, such as ra­, who will sup­ply the ra­dio code for a small fee.

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