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Immobilizer ECU

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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Zacks
Posts: 1
Joined: 20 November 2017
Year and Model: 2004 S40 T5
Location: Johannesburg

Immobilizer ECU

Post by Zacks »

Does anyone know the location of the immobilizer box on the 2004 s40 T5 sedan. My vehicles say "IMMOBILIZER" and i was told to bring the key and the immobiliser ecu box for bypassing and or software reload.

Pls help
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MadeInJapan
MVS Moderator
Posts: 13434
Joined: 31 March 2005
Year and Model: '98 S70 T5 '07S40T5
Location: Knoxville, TN American but born in Japan
Has thanked: 17 times
Been thanked: 35 times

Post by MadeInJapan »

I didn't find specific information to your problem but could it be that the battery in the FOB is just weak? I'd try to replace that first before digging into everything!!
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
'04 V70 2.5T Red/Taupe Some Upgrades Mobil-1
'07 S40 T5 AWD 6 speed manual! Silver/Black Stage1 Heico & Elevate
'07 S60 2.5T Blue/Taupe- my kid's Volvo
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