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Gaz9000

Active Member
Oct 14, 2021
34
23
Hi all,

Just hoping I can save anyone some issues with a snapped or faulty rear headlight sensor.

There is a single part number (main digits/letters) but please pay attention to the suffix as this determines the shape and fitment.

Quite a lot of the parts websites give a mixture of part suffixes within the same OEM part reference number but this is in error, they are not interchangeable.

5Q0512521E and 5Q0512521F seem to be compatible, from what I've since been able to determine.

5Q0512521G, 5Q0512521H and 5Q0512521J seem to be an alternative design.

Online sellers, ebay compatibility and fitment checkers seem to state that both are compatible for RHD, Cupra 280 ST. These are often accompanied by a photograph that says 'for illustration purposes only' and this is sometimes for the OTHER style of part, so dont rely on that either!

It seems to be the same across all brands under the parent company, there doesn't seem to be a cross over year or any parts-bin specials, so just get underneath, check whether you need a stand off lower bracket with two bolts, or that D shaped one with the 90 degree bend and one bolt hole.

I've attached my comparison, and the best examples of vendor supplied parts and the correct part numbers.

For anyone that's done the front sensors, turning full lock and its fitted 10 minutes later, it's more involved!

If you want my any advice in getting the old one off - its straight to a Dremel with a cutting wheel and attack the bolt heads on the bottom bracket, but switch to the nuts on the top fittings. And wear googles. And make sure the just-cut-off RED HOT nut doesn't fall down your sleeve and end up trapped in there while you frantically try to wiggle your arm to free it! Three separate burns!!

I cant find anywhere that resells the replacements except where you're ordering in bulk boxes (my local Seat dealer just switched to a new brand), so I'll do what everyone else seems to, M5, ~20mm, bolts with thread lock or a nyloc nut.

Hope this helps someone on a google search further down the line.

Cheers
 

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Hi all,

Just hoping I can save anyone some issues with a snapped or faulty rear headlight sensor.

There is a single part number (main digits/letters) but please pay attention to the suffix as this determines the shape and fitment.

Quite a lot of the parts websites give a mixture of part suffixes within the same OEM part reference number but this is in error, they are not interchangeable.

5Q0512521E and 5Q0512521F seem to be compatible, from what I've since been able to determine.

5Q0512521G, 5Q0512521H and 5Q0512521J seem to be an alternative design.

Online sellers, ebay compatibility and fitment checkers seem to state that both are compatible for RHD, Cupra 280 ST. These are often accompanied by a photograph that says 'for illustration purposes only' and this is sometimes for the OTHER style of part, so dont rely on that either!

It seems to be the same across all brands under the parent company, there doesn't seem to be a cross over year or any parts-bin specials, so just get underneath, check whether you need a stand off lower bracket with two bolts, or that D shaped one with the 90 degree bend and one bolt hole.

I've attached my comparison, and the best examples of vendor supplied parts and the correct part numbers.

For anyone that's done the front sensors, turning full lock and its fitted 10 minutes later, it's more involved!

If you want my any advice in getting the old one off - its straight to a Dremel with a cutting wheel and attack the bolt heads on the bottom bracket, but switch to the nuts on the top fittings. And wear googles. And make sure the just-cut-off RED HOT nut doesn't fall down your sleeve and end up trapped in there while you frantically try to wiggle your arm to free it! Three separate burns!!

I cant find anywhere that resells the replacements except where you're ordering in bulk boxes (my local Seat dealer just switched to a new geometry dash full brand), so I'll do what everyone else seems to, M5, ~20mm, bolts with thread lock or a nyloc nut.

Hope this helps someone on a google search further down the line.

Cheers
The VAG parts-bin confusion with suffix letters (E/F vs G/H/J) on these headlight leveling sensors catches so many people out on eBay, so having this broken down clearly is brilliant.
Often, the sensor electronics are actually fine, but the tiny plastic ball joints on the linkage arm seize up due to road salt and snap the arm. If anyone catches it early, spraying penetration fluid (PlusGas) and applying silicone grease on those ball joints during regular servicing can save the sensor entirely.
 
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