I HAVE A 2005 RRS 2.7 TDV6

WHEN MY LIGHTS ARE OFF MY CAR DRIVES PERFECT
WHEN MY LIGHT ARE ON IT WILL NOT CHANGE GEAR

I HAVE REPLACED SWITCH FOR HEADLIGHTS IT HAS NOT FIXED

COULD IT BE THE BRAKE SWITCH???

ANY HELP MUCH APPRECIATED

THIS ALL STARTED AFTER I REPLACED MY BATTERY AND A REAR BRAKE LIGHT BULB  2.7 tdv6 se java black bought totally standard had 20" stormers, upgrades so far led bulbs all round, smoked side repeaters 22" supersports, gone for colour coding

What happens if you take out the brake light bulb?? 

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or put the original back in, getting it back to it's original state ?

correct battery RR's are 'choosy' with their batteries - it's got to be correct  RR Sport Supercharged Vesuvius Orange 4.2 V8 First edition

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Get your alternator checked

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fixed for now by taking brake light bulb out
but what problem could a brake light bulb cause to make the car act so strange.... 2.7 tdv6 se java black bought totally standard had 20" stormers, upgrades so far led bulbs all round, smoked side repeaters 22" supersports, gone for colour coding

I had filament break on stop tail bulb and crossed so side light and break light bridged this could be the problem?? 

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mrsport wrote:

fixed for now by taking brake light bulb out
but what problem could a brake light bulb cause to make the car act so strange....

Given the trouble that blown or non genuine bulbs cause on these cars why not just treat them as a service item and change them regularly, they are less than �2 each from LR.

An oldie...

Incorrect or blown stop/side light bulbs causing gearbox faults

Quote:

Issue
The customer reports engine or gearbox faults after replacement of the stop/side lamp bulbs or the bulb has
blown.

Cause
The incorrect bulb has been fitted to the rear lamp stop/side holder. The customer may have fitted a single
filament bulb which can be, if forced, inserted in place of a twin filament stop/side lamp bulb. This has been known to cause a number of more significant failures on the vehicle the main one being the gearbox goes into default mode.

Note:
If the bulb has a broken stop/side lamp filament this can also give the same symptoms.

Action
To prevent any unnecessary and expensive repair please carry out a visual check of the brake and side lights before carrying out any further work to the engine and gearbox.
The part number for the stop/side lamp bulb is XZQ000020

 Malaysia Boleh!
4.2SC Chawton White, Stormers
Tasmod's Sills, Wind Deflectors, LR Sills
Clear Side Repeaters, Towbar
Larini Sports Exhaust, K&N Air Filter
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