What goes wrong on a 2008 to 2016 Tiguan?
The first Tiguan arrived in May 2008. On 125TSI, 147TSI, 132TSI and 155TSI cars with engines built up to 1 May 2012, Australian Car Reviews says the chain tensioner retainer can fail. The timing chain (which keeps the valves in step with the pistons) can then skip teeth, and the pistons and valves can collide. The site recommends fitting the latest retainer before that happens.
The 1.4 Twincharger 118 TSI may suffer chain stretch, and a rattle from the engine bay is the common sign. A different rattle, under acceleration at roughly 1800 to 3000 rpm on 2008 to 2010 2.0-litre petrols, may come from the turbocharger wastegate. Don't guess between the two: let a mechanic listen.
On the electrical side, door ajar warnings with everything shut, or a parking brake that won't release after using the hazard lights, may need the gateway control module reprogrammed. Two diesel recalls also matter: a cracked injector line on 2009 to 2011 cars, and the 2.0-litre EA189 emissions software fix for 2008 to 2015 cars.
What about the 2016 to 2024 Tiguan?
Australian Car Reviews lists six recalls and no common faults for this generation. Check for campaign 60C9, a sunroof lighting module that can short and scorch, and campaigns 66L5 and 66M3, the R-Line roof spoiler that can detach. Campaign 10H5, for 2021 and 2022 cars, covers a loose engine cover that may touch the turbocharger.
The third generation, from 2024, has one recall listed: campaign 47BV, a software fault that can switch off Emergency Assist and Travel Assist. An authorised Volkswagen dealer updates the software.
Do you need a Tiguan battery replacement?
Have the battery tested before you buy one. Slow starts, warning lights and stop-start that quits working all point that way, but so does a charging fault, and a new battery won't fix an alternator that isn't charging.
Then find out if your car has stop-start. Australian Car Reviews lists it on every launch powertrain of the 2016 Tiguan, though CarExpert says the older 1.4-litre turbo doesn't get it. A stop-start car's battery is built for far more restarts than a basic one, so fitting the wrong type can shorten its life.
Ask for a battery that matches what the car came with, and ask whether the car's computer needs to be told about the new one. Car batteries has more on what a good replacement looks like.
How often is a Tiguan due?
The current Tiguan is on 12 months or 15,000 km. Older cars may differ, so check the schedule for yours. Having a qualified independent mechanic follow Volkswagen's schedule and specifications does not by itself void your Tiguan's five-year, unlimited-kilometre warranty. If an independent repairer causes a defect, though, the maker's warranty is unlikely to cover it and you'd take it up with that repairer, so choose one who knows these cars.
Tell us the year and what the Tiguan's doing. A local mechanic who specialises in your car.
What we'd check first on a Tiguan
On a 2008 to 2012 petrol, find out if the tensioner retainer has been updated before anything else. No record of it? We'd ask a mechanic who works on Volkswagens to check, because it's a small part protecting a whole engine. On any year, run the VIN through vehiclerecalls.gov.au. And if the car won't start, test the battery first: a flat battery isn't always a dead one.